Category: 22693-41-0

Nguyen, Suong T.’s team published research in ACS Catalysis in 10 | CAS: 22693-41-0

ACS Catalysis published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, Related Products of catalysis-chemistry.

Nguyen, Suong T. published the artcileLight-Driven Depolymerization of Native Lignin Enabled by Proton-Coupled Electron Transfer, Related Products of catalysis-chemistry, the publication is ACS Catalysis (2020), 10(1), 800-805, database is CAplus.

Here, we report a catalytic, light-driven method for the redox-neutral depolymerization of native lignin biomass at ambient temperature This transformation proceeds via a proton-coupled electron-transfer (PCET) activation of an alc. O-H bond to generate a key alkoxy radical intermediate, which then facilitates the ¦Â-scission of a vicinal C-C bond. Notably, this single-step depolymerization is driven solely by visible-light irradiation, requires no stoichiometric chem. reagents, and produces no stoichiometric waste. This method exhibits good efficiency and excellent selectivity for the activation and fragmentation of the ¦Â-O-4 linkage in the polymer backbone, even in the presence of numerous other PCET-active functional groups. The feasibility of this protocol in enabling the cleavage of the ¦Â-1 linkage in model lignin dimers was also demonstrated. These results provide further evidence that visible-light photocatalysis can serve as a viable method for the direct conversion of lignin biomass into valuable arene feedstocks.

ACS Catalysis published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, Related Products of catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Danda, Hidenori’s team published research in Journal of Organic Chemistry in 55 | CAS: 22693-41-0

Journal of Organic Chemistry published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, SDS of cas: 22693-41-0.

Danda, Hidenori published the artcileAcyclic stereoselection. 48. Reversal of stereochemistry in the aldol reactions of a chiral boron enolate, SDS of cas: 22693-41-0, the publication is Journal of Organic Chemistry (1990), 55(1), 173-81, database is CAplus.

A route to optically active anti aldols of certain aldehydes is presented. The boron enolate derived from oxazolidinone I reacts with various aldehydes to give either syn or anti aldols, depending on the amount of dibutylboron triflate used in the enolization of I. The amine [(Me2CH2)2NEt or Et3N] used in the enolization is also found to have a dramatic effect on the subsequent aldol reaction. High anti selectivity is observed when I and 3-(arylthio)propenals, e.g., PhSCH:CHCHO, are used whereas moderate selectivity is observed when I and aromatic aldehydes, e.g., PhCHO, are used. An open transition state is suggested to account for the formation of the anti aldols. NMR studies provide support for the suggested mechanism. Although findings are at present limited to a few specific aldehydes, the ability to obtain either syn or anti aldols from the same chiral enolate by a choice of reagent and stoichiometry could have significant synthetic applicability.

Journal of Organic Chemistry published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, SDS of cas: 22693-41-0.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Zhu, Qilei’s team published research in Journal of the American Chemical Society in 140 | CAS: 22693-41-0

Journal of the American Chemical Society published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C22H12F6O6S2, Application In Synthesis of 22693-41-0.

Zhu, Qilei published the artcileIntermolecular Anti-Markovnikov Hydroamination of Unactivated Alkenes with Sulfonamides Enabled by Proton-Coupled Electron Transfer, Application In Synthesis of 22693-41-0, the publication is Journal of the American Chemical Society (2018), 140(2), 741-747, database is CAplus and MEDLINE.

Here authors report a catalytic method for the intermol. anti-Markovnikov hydroamination of unactivated alkenes using primary and secondary sulfonamides. These reactions occur at room temperature under visible light irradiation and are jointly catalyzed by an iridium(III) photocatalyst, a dialkyl phosphate base, and a thiol hydrogen atom donor. Reaction outcomes are consistent with the intermediacy of an N-centered sulfonamidyl radical generated via proton-coupled electron transfer activation of the sulfonamide N-H bond. Studies outlining the synthetic scope (>60 examples) and mechanistic features of the reaction are presented.

Journal of the American Chemical Society published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C22H12F6O6S2, Application In Synthesis of 22693-41-0.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Sauer, Scott J.’s team published research in Journal of the American Chemical Society in 132 | CAS: 22693-41-0

Journal of the American Chemical Society published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, Related Products of catalysis-chemistry.

Sauer, Scott J. published the artcileDirect Carbon-Carbon Bond Formation via Reductive Soft Enolization: A Kinetically Controlled syn-Aldol Addition of ¦Á-Halo Thioesters and Enolizable Aldehydes, Related Products of catalysis-chemistry, the publication is Journal of the American Chemical Society (2010), 132(40), 13997-13999, database is CAplus and MEDLINE.

The direct addition of enolizable aldehydes and ¦Á-halo thioesters to produce ¦Â-hydroxy thioesters enabled by reductive soft enolization is reported. The transformation is operationally simple and efficient and has the unusual feature of giving high syn-selectivity, which is the opposite of that produced for (thio)esters under conventional conditions. Moreover, excellent diastereoselectivity results when a chiral nonracemic ¦Á-hydroxy aldehyde derivative is used.

Journal of the American Chemical Society published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, Related Products of catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Miller, David C.’s team published research in Journal of the American Chemical Society in 141 | CAS: 22693-41-0

Journal of the American Chemical Society published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, Formula: C15H24S.

Miller, David C. published the artcileAnti-Markovnikov Hydroamination of Unactivated Alkenes with Primary Alkyl Amines, Formula: C15H24S, the publication is Journal of the American Chemical Society (2019), 141(42), 16590-16594, database is CAplus and MEDLINE.

A photocatalytic method for the intermol. anti-Markovnikov hydroamination of unactivated olefins with primary alkyl amines to selectively furnish secondary amine products is reported. These reactions proceed through aminium radical cation (ARC) intermediates and occur at room temperature under visible light irradiation in the presence of an iridium photocatalyst and an aryl thiol hydrogen atom donor. Despite the presence of excess olefin, high selectivities are observed for secondary over tertiary amine products, even though the secondary amines are established substrates for ARC-based olefin amination under similar conditions.

Journal of the American Chemical Society published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, Formula: C15H24S.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Dilworth, Jonathan R.’s team published research in Dalton in | CAS: 22693-41-0

Dalton published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, Related Products of catalysis-chemistry.

Dilworth, Jonathan R. published the artcileRhodium and iridium complexes with thiolate and tertiary phosphine ligands. The synthesis and structures of trans-[Ir(SC6H3Cl2-2,6)(CO)(PPh3)2], [Rh2(¦Ì-SC6H3Pri3-2,4,6)2(CO)2(PPh3)2], [Rh2H2(¦Ì-SC6H4PPh2-2)2(CO)2(PPh3)2][BF4]2, and [Rh2I6(MeSC6H4PPh2-2)2], Related Products of catalysis-chemistry, the publication is Dalton (2000), 3007-3015, database is CAplus.

Reaction of [MF(CO)(PPh3)2] (M = Rh or Ir) with bulky aromatic thiols ArSH gave binuclear [M2(¦Ì-SAr)2(CO)2(PPh3)2] (M = Rh, SAr = SC6H2Pri3-2,4,6 or SC6H3Me2-2,6) and mononuclear [M(SAr)(CO)(PPh3)2] (M = Rh or Ir, SAr = SC6H3Cl2-2,6 or SC6H4SiPh3-2; M = Ir, SAr = SC6H2Pri3-2,4,6 or SC6H3Me2-2,6). The crystal structure of [Rh2(¦Ì-SC6H3Pri3-2,4,6)2(CO)2(PPh3)2] showed a binuclear thiolate bridged core while that of [Ir(SC6H3Cl2-2,6)(CO)(PPh3)2] revealed a conventional square planar geometry with trans PPh3 ligands. Three Rh complexes are efficient catalysts for the hydroformylation of hept-1-ene under mild conditions with good selectivity for linear aldehyde for SAr = SC6H4SiPh3-2. Reaction of [MF(CO)(PPh3)2] with phosphinothiolate proligands PSH gave monomeric [M(PS)(CO)(PPh3)2] (M = Rh or Ir; PS = SC6H4PPh2-2 or S(CH2)3PPh2; M = Rh, PS = SCH2CH2PPh2 or SCHMeCH2PPh2). [Rh(SC6H4PPh2-2)(CO)(PPh3)] reacted reversibly with protons (HBF4) to give the dimeric dication [Rh2(¦Ì-SC6H4PPh2-2)2(CO)2(PPh3)2]2+, shown by a crystal structure be a thiolate bridged dimer with an Rh-Rh bond and pseudo-octahedral geometry about each RhIII. Electrophilic attack by [Me3O][BF4] on [Rh(SC6H4PPh2-2)(CO)(PPh3)] occurred at S to give [Rh(MeSC6H4PPh2-2)(CO)(PPh3)]+ and excess of MeI gave [Rh2I6(MeSC6H4PPh2-2)2], with octahedral RhIII linked by a double iodide bridge. Attack at S also occurred in [Rh(SC6H4PPh2-2)(CO)(PPh3)] with I(CH2)3I and ICH2CO2H to give [Rh(2-Ph2PC6H4SCH2CH2CH2)(CO)(PPh3)] and [RhI2(2-Ph2PC6H4SCH2CO2)(PPh3)], resp. [RhI3(CO)(PPh3)2] was a byproduct and shown by a crystal structure to have a pseudo-octahedral structure with trans-PPh3 ligands.

Dalton published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, Related Products of catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Sandrock, Paul B.’s team published research in Acta Crystallographica, Section E: Structure Reports Online in 60 | CAS: 22693-41-0

Acta Crystallographica, Section E: Structure Reports Online published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, Recommanded Product: 2,4,6-Triisopropylbenzenethiol.

Sandrock, Paul B. published the artcileIsopropyl 2,4,6-triisopropylphenyl sulfone: an aryl sulfone with unusual atom deviations from the aromatic least-squares plane, Recommanded Product: 2,4,6-Triisopropylbenzenethiol, the publication is Acta Crystallographica, Section E: Structure Reports Online (2004), 60(4), o544-o546, database is CAplus.

Iso-Pr 2,4,6-triisopropylphenyl sulfone, C18H30O2S, (I), was synthesized for the 1st time. Crystallog. data are given. In spite of the bulky iso-Pr substituents on both ortho positions, crystalline (I) does not exhibit rotational disorder of the iso-Pr group bonded to the sulfonyl. In contrast, the corresponding bromo- and chloroisopropyl groups of crystalline aryl sulfones possessing much smaller di-ortho-Me substituents display striking rotational disorder. While the aryl rings of the latter compounds are essentially planar, considerable atom deviation from the aromatic least-squares plane of (I) was observed None of the intra- or intermol. distances between the Me C atoms of the sulfonylisopropyl group and those of the two ortho-iso-Pr groups of (I) is shorter than the sum of their van der Waals radii, making it unlikely that they would interfere with the rotation of the ¦Á-iso-Pr group prior to crystallization

Acta Crystallographica, Section E: Structure Reports Online published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, Recommanded Product: 2,4,6-Triisopropylbenzenethiol.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Nguyen, Suong T.’s team published research in Journal of the American Chemical Society in 143 | CAS: 22693-41-0

Journal of the American Chemical Society published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, Formula: C15H24S.

Nguyen, Suong T. published the artcileDepolymerization of Hydroxylated Polymers via Light-Driven C-C Bond Cleavage, Formula: C15H24S, the publication is Journal of the American Chemical Society (2021), 143(31), 12268-12277, database is CAplus and MEDLINE.

The accumulation of persistent plastic waste in the environment is widely recognized as an ecol. crisis. New chem. technologies are necessary both to recycle existing plastic waste streams into high-value chem. feedstocks and to develop next-generation materials that are degradable by design. Here, we report a catalytic methodol. for the depolymerization of a com. phenoxy resin and high mol. weight hydroxylated polyolefin derivatives upon visible light irradiation near ambient temperature Proton-coupled electron transfer (PCET) activation of hydroxyl groups periodically spaced along the polymer backbone furnishes reactive alkoxy radicals that promote chain fragmentation through C-C bond ¦Â-scission. The depolymerization produces well-defined and isolable product mixtures that are readily diversified to polycondensation monomers. In addition to controlling depolymerization, the hydroxyl group modulates the thermomech. properties of these polyolefin derivatives, yielding materials with diverse properties. These results demonstrate a new approach to polymer recycling based on light-driven C-C bond cleavage that has the potential to establish new links within a circular polymer economy and influence the development of new degradable-by-design polyolefin materials.

Journal of the American Chemical Society published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, Formula: C15H24S.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Ito, Mikinao’s team published research in Inorganic Chemistry in 48 | CAS: 22693-41-0

Inorganic Chemistry published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, Name: 2,4,6-Triisopropylbenzenethiol.

Ito, Mikinao published the artcileSynthesis and reactions of mono- and dinuclear Ni(I) thiolate complexes, Name: 2,4,6-Triisopropylbenzenethiol, the publication is Inorganic Chemistry (2009), 48(5), 2215-2223, database is CAplus and MEDLINE.

Mononuclear and dinuclear nickel(I) thiolato-bridged complexes, [Ni(PPh3)(¦Ì-SR)]2 [1a,b, R = 2,4,6-triisopropylphenyl (Tip), 1-adamantyl (Ad)], [(DxpS)Ni(¦Ì-SDxp)Ni(PPh3)] (2, Dxp = 2,2”,6,6”-tetramethyl-1,1′:3,1”-terphenyl-2′-yl), and [Ni(SDmp)(PPh3)] (3, Dmp = 2,6-dimesitylphenyl), were prepared by reactions of a nickel(I) amide [Ni{N(SiMe3)2}(PPh3)2] with the corresponding thiols. The two nickel centers of 1a and 1b are equivalent, and are linked by two thiolato groups and a Ni-Ni bond, whereas the two inequivalent nickel centers of 2 are bridged by a SDxp thiolate, by ¦Ç2:¦Ç3-xylyl aromatic ring of the other SDxp ligand, and a Ni-Ni bond. A slightly bulkier m-terphenyl thiolate, –SDmp, prevents its nickel complex from forming a Ni-Ni bond, and the mononuclear nickel(I) center of 3 is bound to PPh3 and –SDmp through interactions with the sulfur and a ¦Ç2-mesityl. The coordinatively unsaturated nickel(I) complex 3 is reactive, and its reaction with TEMPO (2,2,6,6-tetramethylpiperidine N-oxyl) generated diamagnetic [Ni(SDmp)(PPh3)(O,N:¦Ç2-TEMPO)] (4). N-Heterocyclic carbenes, 1,3,4,5-tetramethyl-2-imidazolinylidene (IMe’) and 1,3-dimesityl-2-imidazolinylidene (IMes), also react with 3 to afford a dinuclear nickel(I) complex, [Ni(IMe’)(¦Ì-SDmp)]2 (5), and a mononuclear nickel(I) complex, [Ni(SDmp)(IMes)] (6), resp. Reaction of 3 with 1 equiv of tBuNC afforded the dinuclear complex [Ni(CNtBu)(¦Ì-SDmp)]2 (7), whereas the analogous reaction with 1 equiv of CO resulted in a mixture of [Ni(PPh3)2(CO)2] and [Ni(CO)(SDmp)2(PPh3)] (8).

Inorganic Chemistry published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, Name: 2,4,6-Triisopropylbenzenethiol.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Wang, Qiang’s team published research in Chemical Communications (Cambridge, United Kingdom) in | CAS: 22693-41-0

Chemical Communications (Cambridge, United Kingdom) published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C11H8N2O2, Synthetic Route of 22693-41-0.

Wang, Qiang published the artcileFormation of nickel-thiolate aggregates via reaction with CH2Cl2, Synthetic Route of 22693-41-0, the publication is Chemical Communications (Cambridge, United Kingdom) (2003), 2776-2777, database is CAplus and MEDLINE.

Reaction of newly prepared Ni-dithiolate complex [Ni(L1)(dppe)] with CH2Cl2 affords the novel pentanuclear complex [Ni5Cl2(L1)4(dppe)2] (1) (H2L1 = 1,2-mercaptomethyl-3,4-dimethylbenzene), while [Ni(L1)(dcpe)] (dcpe = 1,2-bis(cyclohexylphosphino)ethane) reacts with CH2Cl2 to give binuclear [Ni2Cl2(L2)(dcpe)2] (2) in which two L1 units are linked through a sulfur by a methylene group derived from CH2Cl2 to form L2 (H2L = I). 1 And 2 are characterized by crystal structure anal. When [NiCl2(PP)] (PP = dppe, dcpe) is reacted with 2,4,6-triisopropylthiophenol (HL3) or 2-mercaptomethylbenzenethiol (H2L4) n the presence of NaOMe in MeOH, the corresponding mononuclear Ni thiolate complexes [Ni(L3)2(PP)] and [Ni(L3)(PP)] were obtained.

Chemical Communications (Cambridge, United Kingdom) published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C11H8N2O2, Synthetic Route of 22693-41-0.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia