Add time:07/15/2019         Source:sciencedirect.com

Protonation of the reactive intermediates produced in the reaction between tert-butyl isocyanide and dialkyl acetylenedicarboxylates by aromatic carboxylic acids leads to vinylnitrilium cations, which undergo nucleophilic reaction with conjugate bases of the carboxylic acids to produce dialkyl (E)-2-[(benzoyloxy)(tert-butylimino)methyl]-2-butenedioates and this intermediate rearranges to the dialkyl (E)-2-{[benzoyl(tert-butyl)amino]carbonyl}-2-butenedioate derivatives.

We also recommend Trading Suppliers and Manufacturers of Benzoic acid, 2-(acetyloxy)-4-Methyl-, Methyl ester (cas 13515-12-3). Pls Click Website Link as below: cas 13515-12-3 suppliers