Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

P- carboxylic acid

KETENES, KETENE DITffiRS AND RELATED SUBSTANCES] (Vol 14) py-n-Octadecyloxy-3ymtrodiphenyl-p-carboxylic acid [21351-71-3]... [Pg.696]

Scheme 7 Photoisomerization of salts of frans,frans-2,3-diphenyl-1-benzoyl-cyclopropane-p-carboxylic acid... Scheme 7 Photoisomerization of salts of frans,frans-2,3-diphenyl-1-benzoyl-cyclopropane-p-carboxylic acid...
Single crystal-to-single crystal reactions are quite rare in solid-state organic photochemistry, and we were fortunate to discover a second example in the Yang photocyclization of the 1-phenylethylamine salt of 2-methyl-2-benzoyl-p-carboxylic acid 39 [37]. [Pg.19]

A second example of the use of ionic chiral auxiliaries for asymmetric synthesis is found in the work of Chong et al. on the cis,trans photoisomerization of certain cyclopropane derivatives [33]. Based on the report by Zimmerman and Flechtner [34] Aat achiral traws,traws-2,3-diphenyl-l-benzoylcyclopropane (35a, Scheme 7) undergoes very efficient (=0.94) photoisomerization in solution to afford the racemic cis,trans isomer 36a, the corresponding p-carboxylic acid 35b was synthesized and treated with a variety of optically pure amines to give salts of general structure 35c (CA=chiral auxiliary). Irradiation of crystals of these salts followed by diazomethane workup yielded methyl ester 36d, which was analyzed by chiral HPLC for enantiomeric excess. The results are summarized in Table 3. [Pg.247]

Diphenyl diselenide di-p-carboxylic acid, Se2(C6H4.C02H)2, is formed in the usual way from -aminobenzoic acid. It melts at 314° to 315° C., is only sparingly soluble in acetic acid, but may be crystallised from methyl alcohol. The yield is poor. [Pg.141]

Diphenyl selenide di-p-carboxylic acid, Se(C6H4.C02H)2, is the principal constituent of the mother-liquors from the preceding compound its melting-point varies from 312° 313° C. to 315° 316° C. [Pg.141]

PP FACTOR P.P, FACTOR-PELLAGRA PREVENTIVE FACTOR PYRIDINE-3-CARBONIC ACID PYRIDINE-P-CARBOXYLIC ACID PYRIDINE-3-CARBOXYLIC ACID 3-PYRIDINECARBOXYLIC ACID PYRIDINE-CARBOXYLIQUE-3 (FRENCH) S115 SK-NIACIN TINIC VITAPLEXN WAMPOCAP... [Pg.983]

PYRIDINECARBOXiTJC ACID see NCQ900 PYRIDINE-P-CARBOXYLIC ACID see NCQ900 3-PYRIDINECARBOXYUC ACID, ALUMINUM SALT see AHD650... [Pg.1859]

Phenylarsine-p-carboxylic acid, CO2H.C6H4.AsH2. —A methyl alcohol solution of p-carboxyphenylarsinic acid is reduced by zinc dust and hydrochloric acid and the product removed by steam distillation. In the moist state it is very sensitive to atmospheric oxygen, becoming yellow and apparently dianging to p-arsenobenzoic acid. [Pg.318]

Diethylphenylarsine-p-carboxylic acid, C02H.C6H4.As(C2H6)2, occurs in small yield when the foregoing hydroxycbloride is reduced with till and hydrochloric acid. The smallness of the yield i.s accounted for on the assumption that the following side-reaction occurs ... [Pg.322]

Nicotinic Acid Benzyl Ester. 3-Pyridinecarboxylic acid phenytmethyt ester pyridine-p -carboxylic acid benzyl ester benzyl ni cot mate Rubnment Pycaril Pykaryl. C.j-HuNOy mol wt 213.23. C 73.22%, H 5,20%, N 6.57%. O 1500%. Prepn Brit- pat. 817,103 (1959 to Nordmark-Werke). [Pg.1031]

Chebbi, A. and Carlier, P., Carboxylic acids in the troposphere, occurrence, sources, and sinks a review, Atmos. Environ., 30, 4233-4249, 1996. [Pg.503]

Pyridine-3-carbonic acid Pyridine-3-carboxylic acid 3-Pyridinecarboxylic acid Pyridine-P-carboxylic acid... [Pg.2809]

See other pages where P- carboxylic acid is mentioned: [Pg.506]    [Pg.459]    [Pg.215]    [Pg.381]    [Pg.1782]    [Pg.320]    [Pg.320]    [Pg.320]    [Pg.321]    [Pg.321]    [Pg.321]    [Pg.321]    [Pg.322]    [Pg.506]    [Pg.288]    [Pg.147]    [Pg.650]    [Pg.19]    [Pg.19]    [Pg.106]    [Pg.44]    [Pg.18]    [Pg.18]    [Pg.13]    [Pg.842]    [Pg.3788]    [Pg.22]    [Pg.45]    [Pg.350]    [Pg.52]    [Pg.336]    [Pg.299]    [Pg.294]   


SEARCH



A, P-unsaturated carboxylic acid derivatives

Aliphatic a,P-Unsubstituted Carboxylic Acids

Aromatic a,P-Unsubstituted Carboxylic Acids

Carboxylic acid p-nitrophenyl esters

Carboxylic acids, P-bromocyclization

Carboxylic acids, P-hydroxyelimination

Carboxylic acids, P-hydroxyelimination alkene synthesis

Carboxylic acids, a,P-epoxysynthesis

Carboxylic acids, a,P-epoxysynthesis via sulfur ylide reagents

Carboxylic acids, a-hydrazino-P-hydroxyesters

Carboxylic acids, a-hydrazino-P-hydroxyesters synthesis

Carboxylic acids, p-alkylsynthesis

Carboxylic acids, p-alkylsynthesis Knoevenagel reaction

Carboxylic acids, p-silyloxidative decarboxylation

Carboxylic acids, p-silyloxidative decarboxylation formation of alkenes

Carboxylic acids, p-stannyloxidation

Carboxylic acids, p-stannyloxidation formation of alkenes

Carboxylic acids, p-stannyloxidation oxidative decarboxylation

Carboxylic acids, syn-a-amino-P-hydroxyenantioselective aldol reaction

Carboxylic acids, syn-a-amino-P-hydroxyenantioselective aldol reaction gold catalysis

Carboxylic acids, syn-a-methyl-p-hydroxyaldol reaction

Carboxylic acids, syn-a-methyl-p-hydroxyaldol reaction synthesis

Carboxylic acids, syn-a-methyl-p-hydroxyaldol reaction titanium enolates, chiral auxiliary

Carboxylic acids, syn-a-methyl-p-hydroxyaldol reaction zirconium enolates, chiral auxiliary

Fluoro-a,p-unsaturated carboxylic acids

P- carboxylic acid esters

P-Hydroxy carboxylic acids

P-Keto carboxylic acids

© 2024 chempedia.info