Tag: M.W=200-250

Jing, Xiaobi published the artcileSynthesis and characterization of 2-phenyl-6-hydrazinyl-3-pyridazinone derivatives, Application In Synthesis of 1798-04-5, the publication is Youji Huaxue (2010), 30(6), 904-907, database is CAplus.

A method for the preparation of 2-phenyl-6-hydrazine-3-pyridazinone derivatives was designed and the synthesis of the target compounds was achieved involving a rearrangement reaction of acetyl hydrazine derivatives in the presence of sodium hydroxide in ethanol and formation of hydrazone compounds and the product structures (i.e., pyridazine hydrazine derivatives) were confirmed by IR, ¹H-NMR, ¹³C-NMR. The rearrangment reaction of 2-[(1,6-dihydro-6-oxo-1-phenyl-3-pyridazinyl)oxy]acetic acid hydrazide thus gave 6-hydrazinyl-2-phenyl-3(2H)-pyridazinone.

Youji Huaxue published new progress about 1798-04-5. 1798-04-5 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2-(4-(tert-Butyl)phenoxy)acetic acid, and the molecular formula is C12H16O3, Application In Synthesis of 1798-04-5.

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

Seyferth, Dietmar published the artcileReactions of the 1,1-Diphenylacetone-Derived Dianion as a C,O-Dinucleophile with Organohalosilanes and -germanes, COA of Formula: C12H10F2Si, the publication is Organometallics (1997), 16(11), 2413-2426, database is CAplus.

1,1-Diphenylacetone dianion reacts with diorganodichlorosilanes to give 1,1,5,5-tetraorgano-3,7-bis(diphenylmethylene)-1,5-disila-2,8-dioxacyclooctanes, while 1,1-diphenylacetone dianion reacts with diorganodifluorosilanes to give a positional isomer, 1,1,5,5-tetraorgano-3,7-bis(diphenylmethylene)-1,5-disila-2,6-dioxacyclooctane. The structures of 1,1,5,5-tetraphenyl-3,7-bis(diphenylmethylene)-1,5-disila-2,8-dioxyacyclooctane and 1,1,5,5-tetraphenyl-3,7-bis(diphenylmethylene)-1,5-disila-2,6-dioxacyclooctane were determined by x-ray crystallog. A 10-membered cyclic compound and a 6-membered cyclic compound also were prepared by the reaction of 1,1-diphenylacetone dianion with 1,2-dichlorotetramethyldisilane and 1,3-dichlorohexamethyltrisilane, resp. The structure of 1,1,2,2,6,6,7,7-octamethyl-4,9-bis(diphenylmethylene)-1,2,6,7-tetrasila-3,10-dioxacyclodecane was determined by x-ray crystallog. 1,1-Diphenylacetone dianion reacts with diphenyldichlorogermane and diphenyldifluorogermane to give 1,1,5,5-tetraphenyl-3,7-bis(diphenylmethylene)-1,5-digerma-2,6-dioxacyclooctane. The structure of 1,1,5,5-tetraphenyl-3,7-bis(diphenylmethylene)-1,5-digerma-2,6-dioxacyclooctane was determined by x-ray crystallog. A possible explanation for the difference in the reactions observed with Ph₂SiCl₂ and Ph₂SiF₂ is presented. Experiments involving reactions of the 1,1-diphenylacetone dianion with monochlorosilanes indicate that a Si-CH₂, not an Si-O, bond is formed first.

Organometallics published new progress about 312-40-3. 312-40-3 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Difluorodiphenylsilane, and the molecular formula is C5H12O2, COA of Formula: C12H10F2Si.

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

Santavy, Frantisek published the artcileUltraviolet spectra of the methoxy and methylenedioxy groups of some aromatic compounds and alkaloids. IV. Effect of hydroxyl, methoxyl, and methylenedioxy groups on ultraviolet spectra of aromatic compounds conjugated with an oxo group or with an ¦Á,¦Â-double bond in the side chain, Category: catalysis-chemistry, the publication is Collection of Czechoslovak Chemical Communications (1972), 37(6), 1825-50, database is CAplus.

Uv spectra of hydroxy, methoxy, and methylenedioxy derivatives of C6H6, PhCHO, BzOH, MeBz, EtBz, 1-indanone, 1,2-indanedione, MeCH:CHPh, cis- and trans-cinnamic acids, PhCH:NOH, PhCMe:NOH, and 1-indanone oxime were measured in dioxane or EtOH or EtOH-NaOH and discussed.

Collection of Czechoslovak Chemical Communications published new progress about 16909-09-4. 16909-09-4 belongs to catalysis-chemistry, auxiliary class Alkenyl,Carboxylic acid,Benzene,Ether, name is (E)-3-(2,4-Dimethoxyphenyl)acrylic acid, and the molecular formula is C11H12O4, Category: catalysis-chemistry.

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

Li, Chuang-Chuang published the artcileSynthetic Study of 1,3-Butadiene-Based IMDA Approach to Construct a [5-7-6] Tricyclic Core and Its Application to the Total Synthesis of C8-epi-Guanacastepene O, Computed Properties of 4141-48-4, the publication is Journal of Organic Chemistry (2006), 71(18), 6892-6897, database is CAplus and MEDLINE.

An efficient intramol. Diels-Alder (IMDA) strategy for the construction of the [5-7-6] tricyclic core I of guanacastepenes has been developed from cis- and trans-1,3-butadiene-tethered 4-oxopent-2-ynoic acid Et esters II and III. This method facilitates the synthesis of C8-epi-guanacastepene O IV in a very efficient manner.

Journal of Organic Chemistry published new progress about 4141-48-4. 4141-48-4 belongs to catalysis-chemistry, auxiliary class Aryl phosphine ligand,Mono-phosphine Ligands, name is Allyldiphenylphosphine oxide, and the molecular formula is C15H15OP, Computed Properties of 4141-48-4.

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

Li, Di-Zao published the artcileSynthesis and cytotoxicity of novel 20-O-linked homocamptothecin ester derivatives as potent topoisomerase I inhibitors, Related Products of catalysis-chemistry, the publication is Journal of Asian Natural Products Research (2013), 15(11), 1179-1188, database is CAplus and MEDLINE.

In an attempt to improve the antitumor activity of homocamptothecins (hCPTs), a series of novel 20-O-linked hCPT ester derivatives were first designed and synthesized based on a synthetic route, by which hCPTs are acylated with different substituted phenoxyacetic acid ester derivatives Most of the derivatives were assayed for in vitro cytotoxicity against six human cancer cell lines KB, KB/VCR, A549, HCT-8, Bel7402, and A2780, and most of the assayed compounds exhibited good antiproliferative activity on these tumor cell lines especially on KB.

Journal of Asian Natural Products Research published new progress about 163839-73-4. 163839-73-4 belongs to catalysis-chemistry, auxiliary class Trifluoromethyl,Fluoride,Carboxylic acid,Benzene,Ether, name is 2-(4-(Trifluoromethyl)phenoxy)acetic acid, and the molecular formula is C9H7F3O3, Related Products of catalysis-chemistry.

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

Ota, Eisuke published the artcileA Redox Strategy for Light-Driven, Out-of-Equilibrium Isomerizations and Application to Catalytic C-C Bond Cleavage Reactions, Related Products of catalysis-chemistry, the publication is Journal of the American Chemical Society (2019), 141(4), 1457-1462, database is CAplus and MEDLINE.

We report a general protocol for the light-driven isomerization of cyclic aliphatic alcs. to linear carbonyl compounds These reactions proceed via proton-coupled electron-transfer activation of alc. O-H bonds followed by subsequent C-C ¦Â-scission of the resulting alkoxy radical intermediates. In many cases, these redox-neutral isomerizations proceed in opposition to a significant energetic gradient, yielding products that are less thermodynamically stable than the starting materials. A mechanism is presented to rationalize this out-of-equilibrium behavior that may serve as a model for the design of other contrathermodynamic transformations driven by excited-state redox events.

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

Wang, Shan published the artcilenBu₄NI-catalyzed oxidative amidation of aldehydes with tertiary amines, Computed Properties of 2909-77-5, the publication is Tetrahedron Letters (2013), 54(46), 6233-6236, database is CAplus.

An efficient oxidative coupling protocol for amide formation has been developed. Various tertiary amines and aromatic aldehydes were oxidized to their corresponding tertiary amides in moderate to good yields in the presence of a simple Bu₄NI catalyst.

Tetrahedron Letters published new progress about 2909-77-5. 2909-77-5 belongs to catalysis-chemistry, auxiliary class Amine,Benzene, name is 2,6-Diisopropyl-N,N-dimethylaniline, and the molecular formula is C7H8O3, Computed Properties of 2909-77-5.

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

Li, Ying-Zi published the artcileEnantioselective synthesis of bicyclo[2.2.2]octane-1-carboxylates under metal free conditions, HPLC of Formula: 4230-93-7, the publication is Organic Chemistry Frontiers (2015), 2(3), 274-278, database is CAplus.

A new tandem reaction was realized that permits rapid access to a wide range of bicyclo[2.2.2]octane-1-carboxylates in good to excellent yields with excellent enantioselectivities under metal free, mild, and operationally simple conditions. An open transition state was deemed operative in this highly enantioselective process mediated by an organic base.

Organic Chemistry Frontiers published new progress about 4230-93-7. 4230-93-7 belongs to catalysis-chemistry, auxiliary class Alkenyl,Nitro Compound,Benzene,Ether, name is 1,2-Dimethoxy-4-(2-nitrovinyl)benzene, and the molecular formula is C10H11NO4, HPLC of Formula: 4230-93-7.

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

Zheng, Zhuo Qun published the artcileAlkylation of ammonium salts catalyzed by imidazolium-based ionic liquids, Recommanded Product: Dodecylamineacetate, the publication is Advanced Synthesis & Catalysis (2007), 349(7), 1095-1101, database is CAplus.

Quaternary ammonium salts were synthesized from ammonium salts and dialkyl carbonates over imidazolium ionic liquid catalysts. The reaction gave almost stoichiometric amounts of the quaternary ammonium salts for halides and nitrates. It was found that the electron-donating property of the alkyl moieties of ammonium cations, the electrophilic nature of the alkyl group of the carbonate, the acidity of the acid which the anion of the ammonium salt corresponds to, and the steric hindrance of the ammonium salts and the dialkyl carbonates are the key factors that influence the yields of quaternary ammonium salts. Strong electron-donating alkyl groups on the nitrogen atom of the ammonium salt, electron-withdrawing groups on the methylene carbon of dialkyl carbonate, and weaker steric hindrance of the starting ammonium salts and dialkyl carbonates favor the alkylation reaction of ammonium salts.

Advanced Synthesis & Catalysis published new progress about 2016-56-0. 2016-56-0 belongs to catalysis-chemistry, auxiliary class Active Esterification, name is Dodecylamineacetate, and the molecular formula is C10H16Br3N, Recommanded Product: Dodecylamineacetate.

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

Drozdov, V. A. published the artcileInteraction of alkyl(aryl)chloro- and fluorosilanes with acetonitrile, Synthetic Route of 312-40-3, the publication is Zhurnal Obshchei Khimii (1972), 42(6), 1356-8, database is CAplus.

The nD and deviations of calculated nD as a function of concentration in MeCN were observed for R3SiX (where X = F or Cl and R = Me, Et, Ph, p-MeC6H4 or p-ClC6H4). Ir spectra of such systems were described and evidence of acid-base interaction was found for the fluoro- and chlorosilanes in which Si atoms are sp3d2-hybridized. Solid adducts Ph3SiF.2MeCN and Ph2SiF2.4MeCN were isolated.

Zhurnal Obshchei Khimii published new progress about 312-40-3. 312-40-3 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Difluorodiphenylsilane, and the molecular formula is C12H10F2Si, Synthetic Route of 312-40-3.

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