Isomeric 3-Isoxadiazolylcoumarins and Their Derivatives
作者:Oleksandr S. Detistov、Valeriy D. Orlov、Irina O. Zhuravel'
DOI:10.1002/jhet.893
日期:2012.7
Here, we represent preparativemethods of synthesis of isomeric 3‐isoxadiazolylcoumarins and their derivatives. Two new synthetic methods have been developed for 3‐[1,2,4‐oxadiazol‐5‐yl]coumarins I. The first method is based on a three‐component condensation of coumarin‐;3‐carboxylic acids, 1,1′‐carbonyldiimidazole, and amidoximes. The second method essentially uses the interaction of 5‐cyanomethyl‐1