Catalysis-chemistry

Lundgren, Rylan J. published the artcilePalladium-Catalyzed Cross-Coupling of Aryl Chlorides and Tosylates with Hydrazine, Name: 4-(2-(Di(adamantan-1-yl)phosphino)phenyl)morpholine, the publication is Angewandte Chemie, International Edition (2010), 49(46), 8686-8690, S8686/1-S8686/45, database is CAplus and MEDLINE.

The cross-coupling of aryl chlorides and tosylates with hydrazine in presence of cinnamylpalladium chloride dimer and 4-[2-(bis(1-adamantanyl)phosphinyl)phenyl]morpholine proceeds rapidly with excellent chemoselectivity under mild conditions.

Angewandte Chemie, International Edition published new progress about 1237588-12-3. 1237588-12-3 belongs to catalysis-chemistry, auxiliary class Mono-phosphine Ligands, name is 4-(2-(Di(adamantan-1-yl)phosphino)phenyl)morpholine, and the molecular formula is C30H42NOP, Name: 4-(2-(Di(adamantan-1-yl)phosphino)phenyl)morpholine.

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

Hesp, Kevin D. published the artcileStereo- and Regioselective Gold-Catalyzed Hydroamination of Internal Alkynes with Dialkylamines, HPLC of Formula: 1237588-12-3, the publication is Journal of the American Chemical Society (2010), 132(51), 18026-18029, database is CAplus and MEDLINE.

The use of a P,N-ligand to support a gold complex as a state-of-the-art precatalyst for the stereoselective hydroamination of internal aryl alkynes with dialkylamines to afford E-enamine products, e.g., I is reported. Substrates featuring a diverse range of functional groups on both the amine (ether, sulfide, N-Boc amine, fluoro, nitrile, nitro, alc., N-heterocycles, amide, ester, and carboxylic acid) and alkyne (ether, N-heterocycles, N-phthalimide amines, and silyl ethers) are accommodated with synthetically useful regioselectivity.

Journal of the American Chemical Society published new progress about 1237588-12-3. 1237588-12-3 belongs to catalysis-chemistry, auxiliary class Mono-phosphine Ligands, name is 4-(2-(Di(adamantan-1-yl)phosphino)phenyl)morpholine, and the molecular formula is C30H42NOP, HPLC of Formula: 1237588-12-3.

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

Alsabeh, Pamela G. published the artcileAminocarbonylation of (Hetero)aryl Bromides with Ammonia and Amines using a Palladium/DalPhos Catalyst System, Category: catalysis-chemistry, the publication is Advanced Synthesis & Catalysis (2012), 354(16), 3065-3070, S3065/1-S3065/28, database is CAplus.

Variants of the DalPhos ligand family were examined in a palladium-catalyzed carbonylative amination reaction using inexpensive carbon monoxide and ammonia as reagents. As a result of this survey, the Pyr-DalPhos ligand was identified as being effective for the selective aminocarbonylation of aryl bromides with ammonia, as well as primary and secondary alkylamines. A variety of primary aromatic, heteroaromatic and N-substituted benzamides were formed in moderate to good yields. As part of this study, a (Mor-DalPhos)Pd-benzoyl complex was prepared and crystallog. characterized, thereby showing the viability of the carbonyl insertion step.

Advanced Synthesis & Catalysis published new progress about 1237588-12-3. 1237588-12-3 belongs to catalysis-chemistry, auxiliary class Mono-phosphine Ligands, name is 4-(2-(Di(adamantan-1-yl)phosphino)phenyl)morpholine, and the molecular formula is C30H42NOP, Category: catalysis-chemistry.

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

Alsabeh, Pamela G. published the artcileAddressing Challenges in Palladium-Catalyzed Cross-Couplings of Aryl Mesylates: Monoarylation of Ketones and Primary Alkyl Amines, HPLC of Formula: 1237588-12-3, the publication is Angewandte Chemie, International Edition (2013), 52(28), 7242-7246, database is CAplus and MEDLINE.

The first examples of ketone mono-¦Á-arylation using aryl mesylates are disclosed and the amination of these inexpensive phenol derivatives with primary aliphatic amines have been successfully demonstrated. The [{Pd(cinnamyl)Cl}2]/Mor-DalPhos catalyst system allowed a range of substituted aryl mesylates to be coupled with both cyclic and acyclic dialkyl ketones, including acetone, which is normally a challenging reagent in mono-¦Á- arylation chem. Applying these optimized ketone ¦Á-arylation conditions to Buchwald-Hartwig amination enabled the mono-N-arylation of primary and secondary aliphatic amines, including methylamine, by employing aryl mesylates featuring electron-donating or electron-withdrawing functionality, ortho-substitution, as well as base-sensitive groups. The amination protocol displayed chemoselectivity, thus favoring cross-coupling of the primary amine in each case.

Angewandte Chemie, International Edition published new progress about 1237588-12-3. 1237588-12-3 belongs to catalysis-chemistry, auxiliary class Mono-phosphine Ligands, name is 4-(2-(Di(adamantan-1-yl)phosphino)phenyl)morpholine, and the molecular formula is C30H42NOP, HPLC of Formula: 1237588-12-3.

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

Boca, R. published the artcileSlow magnetic relaxations in a ladder-type Dy(III) complex and its dinuclear analogue, Application In Synthesis of 5411-14-3, the publication is Dalton Transactions (2017), 46(16), 5344-5351, database is CAplus and MEDLINE.

The complex {[Dy₂(PDOA)₃(H₂O)₆]¡¤2H₂O}_n (1) (H₂PDOA = 1,2-phenylenedioxydiacetic acid) was prepared from aqueous solution Its crystal structure, built up of {-Dy-O-C-O-}_n chains interlinked by PDOA ligands yielding a ladder-like arrangement, was determined at 173 K. 1 Exhibits slow magnetic relaxation under a small magnetic field B_DC = 0.2 T with two (LF and HF) relaxation channels. The LF relaxation time at B_DC = 0.2 T and T = 1.85 K is as slow as ¦Ó(LF) = 46 ms whereas the HF channel is ¦Ó(HF) = 1.4 ms. The mole fraction of the LF species is x_LF = 0.76 at 1.85 K and it escapes progressively on heating. In the dinuclear analog [Dy₂(PDOA)₃(H₂O)₆]¡¤3.5H₂O (2) one PDOA ligand forms a bis(chelate) bridge between the two Dy(III) atoms yielding a local structure analogous to that in 1; however its a.c. susceptibility data show slightly different quant. characteristics of the single-mol. magnetic behavior.

Dalton Transactions published new progress about 5411-14-3. 5411-14-3 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2,2-(1,2-Phenylenebis(oxy))diacetic acid, and the molecular formula is C10H10O6, Application In Synthesis of 5411-14-3.

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

Goeke, B. published the artcileStudies on the effect of FOY-305 on the pancreatic secretion of rats in vivo, HPLC of Formula: 71079-09-9, the publication is Verhandlungen der Deutschen Gesellschaft fuer Innere Medizin (1984), 1067-70, database is CAplus.

FOY-305??[59721-29-8] (0.1-5.0 mg/kg/h) administered i.v. to rats inhibited trypsin??[9002-07-7], but not amylase, activity in pancreatic juice was dependent on the dose. Pancreatic juice volume was not affected. FOY-251??[71079-09-9], a metabolite of FOY-305, was found in pancreatic juice and homogenates of rat pancreas after FOY-305 treatment and may be responsible for the antitryptic activity.

Verhandlungen der Deutschen Gesellschaft fuer Innere Medizin published new progress about 71079-09-9. 71079-09-9 belongs to catalysis-chemistry, auxiliary class Salt,Carboxylic acid,Carbamidine,Amine,Benzene,Ester,Protease,Ser/Thr Protease, name is 2-(4-((4-Guanidinobenzoyl)oxy)phenyl)acetic acid methanesulfonic acid salt, and the molecular formula is C17H19N3O7S, HPLC of Formula: 71079-09-9.

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

Goeke, B. published the artcileEffect of a specific serine protease inhibitor on the rat pancreas: systemic administration of camostat and exocrine pancreatic secretion, HPLC of Formula: 71079-09-9, the publication is Digestion (1984), 30(3), 171-8, database is CAplus and MEDLINE.

Camostat??[59721-28-7], a synthetic serine?protease??[37259-58-8] inhibitor, specifically inhibits the trypsin??[9002-07-7] activity in vitro. Immediately after i.v. administration of camostat (5, 2.5, 0.5, and 0.1 mg/kg/h) the trypsin activity in the biliary-pancreatic juice was diminished dose-dependently in anesthetized rats. Amylase??[9000-92-4] release was not influenced. Camostat and its metabolites were detected by high-pressure liquid chromatog. in the pancreatic juice and tissue; in plasma, only the metabolites were found. Therefore, the inhibitory action of camostat on the trypsin activity in the biliary-pancreatic juice may be due to penetration of camostat into the juice.

Digestion published new progress about 71079-09-9. 71079-09-9 belongs to catalysis-chemistry, auxiliary class Salt,Carboxylic acid,Carbamidine,Amine,Benzene,Ester,Protease,Ser/Thr Protease, name is 2-(4-((4-Guanidinobenzoyl)oxy)phenyl)acetic acid methanesulfonic acid salt, and the molecular formula is C17H19N3O7S, HPLC of Formula: 71079-09-9.

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

Dolman, Douglas published the artcileAn acidity function in ethanol-sulfuric acid based on the protonation of diphenylamines, Recommanded Product: Bis(4-nitrophenyl)amine, the publication is Canadian Journal of Chemistry (1967), 45(9), 903-10, database is CAplus.

A Hammett H0 acidity function based on the protonation of 17 diphenylamines in 20 volume % EtOH-aqueous H2SO4 has been established. The H0 value for the most acidic solution studied (11.2M H2SO4) is -6.97. This acidity function differs from that based on the protonation of azobenzenes in the same solvent system; the latter diverges to more neg. H0 values as the sulfuric acid concentration increases. The pKBH+ values for the protonation of the diphenylamines vary from +1.36 for 4-methoxydiphenylamine to -6.21 for 4,4′-dinitrodiphenylamine. A plot of log KBH+ vs. the Hammett ¦Ò constants for five monosubstituted diphenylamines yields a ¦Ñ value of +3.36. The pKBH+ values for 4-methoxy-, 4-methyl-, 4-methylsulfonyl-, and 4-nitro-diphenylamine are all less (more neg.) than expected from the Hammett substituent constants The substituent effects on the basicities of aniline and diphenylamine are the same. The basicities of several nitro-substituted diphenylamines appear to vary regularly, and do not reflect the presence of a strong interaction between the nitro group and H2SO4. 43 references.

Canadian Journal of Chemistry published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Recommanded Product: Bis(4-nitrophenyl)amine.

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

Wilson, Aaron D. published the artcileStructure-function study of tertiary amines as switchable polarity solvents, Product Details of C10H23N, the publication is RSC Advances (2014), 4(22), 11039-11049, database is CAplus.

A series of tertiary amines have been screened for their function as switchable polarity solvents (SPS). The relative ratios of tertiary amine and carbonate species as well as maximum possible concentration were determined through quant. ¹H and ¹³C NMR spectroscopy. The viscosities of the polar SPS solutions were measured and ranged from near water in dilute systems through to gel formation at high concentrations The van’t Hoff indexes for SPS solutions were measured through f.p. depression studies as a proxy for osmotic pressures. A new form of SPS with an amine:carbonate ratio significantly greater than unity has been identified. Tertiary amines that function as SPS at ambient pressures appear to be limited to mols. with fewer than 12 carbons. The N,N-dimethyl-n-alkylamine structure has been identified as important to the function of an SPS.

RSC Advances published new progress about 28056-87-3. 28056-87-3 belongs to catalysis-chemistry, auxiliary class Amine,Aliphatic hydrocarbon chain, name is 2-Ethyl-N,N-dimethylhexan-1-amine, and the molecular formula is C4H6O3, Product Details of C10H23N.

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

Bowman, Robert S. published the artcileSteric and resonance effects in the tert-butyl and isobutylphenols, Computed Properties of 1798-04-5, the publication is Journal of the American Chemical Society (1957), 87-92, database is CAplus.

C₆H₆ treated with Me₂C:CH₂ (I) in the presence of H₂O.BF₃ gave Me₃CPh (II), b₇₄₁ 168.8¡ã, n_D²⁰ 1.4880. PhOH treated with I at 70¡ã in the presence of 5% by weight H₂SO₄ yielded p-Me₃CC₆H₄OH (III), b₂₀ 130.0¡ã, m. 100¡ã; p-Me₃CC₆H₄OCH₂CO₂H, m. 96.5¡ã. PhOH treated with I at 40-5¡ã in the presence of 0.1% H₂SO₄ gave mainly o-Me₃CC₆H₄OH (IV), b₂₀ 113.0¡ã. PhOH in Et₂O treated at 10¡ã in the presence of dilute H₂SO₄ with I gave mainly Me₃COPh (V), b₂₀ 80.0¡ã, n_D²⁰ 1.4869. p-O₂NC₆H₄CMe₃ hydrogenated under ambient conditions over Pd-C yielded 90% p-Me₃CC₆H₄NH₂, iso-PrBz treated at 0¡ã with fuming HNO₃ in AcOH gave 60-70% m-O₂NC₆H₄COCHMe₂ (VI), m. 37¡ã, which oxidized gave p-O₂NC₆H₄CO₂H, m. 141¡ã. VI in glacial AcOH hydrogenated under ambient conditions over Pd-C (from 8 g. 10% PdCl₂ and 20 g. Norit A), the mixture basified with NaOH and extracted with C₆H₆, and the resulting amino compound diazotized and hydrolyzed in HCl gave 19% m-Me₂CHCOC₆H₄OH (semi-carbazone, m. 188¡ã with darkening), which reduced by the method of Huang-Minlon (C.A. 41, 1649a) gave m-Me₂CHCH₂C₆H₄OH (VII), b₂₀ 129.5¡ã; m-Me₂CHCH₂C₆H₄OCH₂CO₂H, m. 90.5¡ã. By conventional methods were prepared the following compounds: m-Me₃C₆H₄OH (VIII), b₂₀ 129.5¡ã, m. 43.0 (m-Me₃CC₆H₄OCH₂CO₂H, m. 116.5¡ã); o-iso-BuC₆H₄OH (IX), b₂₀ 116.5¡ã [o-iso-BuC₆H₄OCH₂CO₂H (X), m. 96.5¡ã]; p-isomer (XI) of IX, b₂₀ 131.0¡ã, m. 48.0¡ã (p-isomer of X, m. 109.5¡ã); iso-BuOPh (XII), b₂₀ 93.0¡ã, n_D²⁰ 1.4929; iso-BuPh (XIII), b₂₀ 67.5¡ã, n_D²⁰ 1.4854. The various Bu compounds were thermally decomposed at initial pressures of 150-400 mm. at 420.0 ¡À0.1¡ã in a specially designed, completely Pyrex glass system and the pressure changes measured. On the basis of the thermal decomposition the compounds can be arranged in the following order of decreasing stability: VIII > II> III > XIII > VII> XI > IV > IX > XII > V. The 1st order rate of the thermal decomposition of IV was determined at 4 temperatures (temperature and k ¡Á 10⁴ given): 383.0¡ã, 11.72 ¡À 0.44; 392.6¡ã, 21.12 ¡À 0.60; 403.2¡ã, 44.39 ¡À 0.59; 413.3¡ã 89.75 ¡À 0.85; activation energy 58.4 kcal./mole. The content of the gaseous hydrocarbons formed in the thermal decomposition of the Bu compounds was determined (compound pyrolyzed, mole-% CH₄, C₃H₈, C₃H₆, iso-C₄H₁₀, iso-C₄H₈, and H given): IV, 20, 3, 56, -, 16, 1; IX, 24, 3, 66, -, 2, 2; VIII, 66, 12, 6, 2, 4, 7; VII, 69, 6, 14, -, 2,5; III, 58, 9, 4, 17, 8, 2; XI, 57, 28, 8, -, 2, 2; II, 41, 10, 6, 8,19 (and 3 C₂H₆), 8; V, 1, 1, -, 4, 93, -; XII, 9, 26, 7, 3, 22 (and 24% CO and 7% C₂H₆), -.

Journal of the American Chemical Society 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, Computed Properties of 1798-04-5.

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