An efficient synthesis of trisubstituted oxazoles via chemoselective O-acylations and intramolecular Wittig reactions
作者:Yi-Ling Tsai、Yu-Shiou Fan、Chia-Jui Lee、Chan-Hui Huang、Utpal Das、Wenwei Lin
DOI:10.1039/c3cc45883k
日期:——
Preparation of new types of trisubstituted oxazoles is realized via chemoselective O-acylations and intramolecular Wittig reactions with ester functionalities using in situ formed phosphorus ylides as key intermediates. A plausible reaction mechanism for this undiscovered chemistry is also proposed based on the existence of expected and rearranged isomeric oxazoles.