Relates to the direct esterification of phenols, particularly alkyl-substituted phenols, with a carboxylic acid or anhydride, in the presence of a strong acid catalyst. Also relates to the use of the acid anhydride to drive the esterification reaction to completion, where an initial reaction ...
The vinyl interchange reaction:I-Vinyl acetate with carboxylic acids stronger than acetic acid. H Hopff,Maged A Osman. Tetrahed-ron . 1968H Hopff,Maged A Osman.The vinyl interchange reaction:I-Vinyl acetate with carboxylic acids stronger than acetic acid.Tetrahed-ron. 1968...
1. Acid chlorides enter into the Dakin-West reaction with α -N-acylamino acids in a pyridine medium via intermediate stages of formation of the azlactone and its C-acylation. 2. Upon reaction with α -N-acylamino acids in pyridine (100°, 1-1.5 or at 20°, 20 h) acid chlorides give...
On the other hand, the accumulated molar amount of hydrogen gas becomes an alternative way to estimate the carboxylic acid corrosion potential. 展开 关键词: Carboxylic acids Corrosion Decomposition Dissolution Hydrogen Iron Naphthalene Reaction kinetics ...
A process for synthesizing long-chain phosphonic acid derivatives and thiol derivative is disclosed. One embodiment provides organic compounds which can form a self-assembled monolayer and are obtained by reaction of an olefin with a thiocarboxylic acid and subsequent hydrogenation to give the thiol, ...
A Cu(OTf)(2)-mediated Chan-Lam reaction of carboxylic acids with arylboronic acids is described. It represents a facile and practical methodology to access phenolic esters in moderate to good yields. The procedure tolerates a series of functional groups, such as methoxycarbonyl, acetoxy, free phe...
Synthesis Co(salen) complexes immobilized onto the HEMA-resin and their catalytic activity in the reaction of epoxides with carboxylic acids 来自 Semantic Scholar 喜欢 0 阅读量: 40 作者:A Bukowska,W Bukowski 摘要: Immobilization of Co(III)(salen) complexes onto a gel-type 2-hydroxyethyl ...
The zwitterionic aza-Claisen rearrangement of various N-allyl amines with carboxylic acid chlorides has been developed as a mild and efficient method to form γ,δ-unsaturated amides or lactams <1995AG(E)1026, 1996CEJ894, 1996JCS(P1)115, 1998AG(E)1140, 1996JOC3677, 2002T1317>. A ...
with a pyridine carboxamidine Ni catalyst, a range of aryliodides can be preferentially coupled to carboxylic acids over boronic acidesters, triflates, chlorides, and even bromides in high yields. Additionally,carboxylic acid derivatives containing heterocycles, N-protected amino acids,and protic ...
carboxylic acid. Thus, we prepared the corresponding methyl ester. To prevent any further racemization of the ester, we evaporated all the solvents and utilized the crude methyl ester of (S)-2-bromobutyric acid for the subsequent SN2 reaction with adamantly isocyanide under standard conditions. ...