Commercially Viable Synthesis of Medetomidine Using a Classical Approach to the Imidazole Ring Formation
作者:Dmitry Orekhov
DOI:10.1021/acs.oprd.2c00273
日期:2022.11.18
method for the synthesis of medetomidine hydrochloride (1) was developed combining two reliable synthetic approaches: the modern method for C–C bond formation through the sp2–sp3 Kumada cross-coupling and the classical method for the imidazole ring formation based on the Weidenhagen reaction. The latter was earlier limited by the high toxicity of hydrogen sulfide used to recover imidazoles from the copper