In 2022,Yang, Ming; Xu, Xue-Cen; Gong, Yue; Zhao, Yu-Long published an article in Organic Chemistry Frontiers. The title of the article was 《Rhodium-catalyzed coupling-cyclization reaction of isocyanides and 2-azidophenyloxyacrylates: synthesis of N-(3-substituted benzo[d]oxazol-2(3H)-ylidene)amines and dihydrobenzo[d]oxazoles》.Related Products of 623-47-2 The author mentioned the following in the article:
A rhodium-catalyzed coupling cyclization of isocyanides with 2-azidophenyloxyacrylates has been developed for the first time. This reaction allows divergent syntheses of two significant N-heterocycles, five-membered N-(3-substituted benzo[d]oxazol-2(3H)-ylidene)amines and dihydrobenzo[d]oxazoles, from readily available starting materials in a single step.Ethyl propiolate(cas: 623-47-2Related Products of 623-47-2) was used in this study.
Ethyl propiolate(cas: 623-47-2) is a clear colorless to pale yellow liquid that is soluble in ethanol, ether and chloroform. It an important organic chemical raw material and pharmaceutical intermediate. Ethyl propargylate is obtained by oxidation of propargyl alcohol to propargylic acid followed by esterification.Related Products of 623-47-2
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics