Results 261 to 270 of about 277,381 (319)

Iodomethaneboronic esters and aminomethaneboronic esters

Journal of Organometallic Chemistry, 1979
Abstract An efficient preparation of pinacol iodomethaneboronate and dibutyl iodomethaneboronate from the respective (phenylthio)methaneboronic esters has been devised, using the reaction with methyl iodide. Pinacol iodomethaneboronate reacts efficiently wit tertiary amines to form the crystalline quaternary ammonium salts.
Donald S. Matteson, Debesh Majumdar
openaire   +1 more source

Mesomorphism of azo-esters and chalcone-esters

Molecular Crystals and Liquid Crystals, 2016
ABSTRACTOne chalcone-ester homologous series of mesogens α-4-[4/-n-alkoxybenzoyloxy phenyl β-4//methoxy benzoyl ethylenes (A) and one azo-ester homologous series of mesogens p-(p/-n-alkoxybenzoyloxy) phenyl azo-p//-methoxy benzene (B) being structurally similar are discussed.
B. B. Jain, Vinay S. Sharma, H. N. Chauhan, R. B. Patel   +3 more
openaire   +1 more source

Conversion of Esters to 2-Acetoxy Esters via 2-Nosyloxy Esters

Synthetic Communications, 1991
Abstract Reaction of 2-nosyloxy esters, available in high yields from the reaction of trimethylsilyl ketene acetals with p-((nitrobenzene)sulfonyl) peroxide, with sodium acetate in DMF produces 2-acetoxy esters in good yields.
Robert V. Hoffman, Deborah Stoll
openaire   +1 more source

Determination of ester substituents in cellulose esters

Journal of Chromatography A, 1993
Abstract A method to determine most ester substituents in cellulose esters has been developed. The cellulose ester is first dissolved in dimethyl sulfoxide. The esters are rapidly hydrolyzed at room temperature by adding a mixture of methanol and sodium hydroxide.
G.W. Tindall, R.L. Perry
openaire   +1 more source

A diethylstilbestrol ester

Journal of Medicinal Chemistry, 1968
R A, Chung, K M, Shih, R W, Brown
openaire   +2 more sources

On Esters of Penicillin

Science, 1943
K, Meyer, G L, Hobby, E, Chaffee
openaire   +2 more sources

Ester Kuiper

Zorgvisie, 2023
openaire   +1 more source

Direct Amidation of Esters by Ball Milling**

Angewandte Chemie - International Edition, 2021
William I Nicholson, Fabien Barreteau, Jamie A Leitch   +2 more
exaly  

Halothioformate -Esters (Carbonohalidothioate -Esters)

2005
S. Sato, N. Furukawa
openaire   +1 more source

CONDENSATION OF ORTHO ESTERS WITH ACETOACETIC ESTER AND MALONIC ESTER

Journal of the American Chemical Society, 1931
openaire   +1 more source