Palladium-Catalyzed Decarboxylative Cross-Coupling of 1,3,4-Oxadiazoles with Alkynoic Acids: A Simple Route for the Preparation of 2-Alkynylated 1,3,4-Oxadiazoles
作者:Ch. Reddy、L. Reddy、P. Reddy
DOI:10.1055/s-0036-1588115
日期:——
4-oxadiazole derivatives have been synthesized by the decarboxylative cross-coupling of alk-2-ynoic acids with 2-(het)aryl-1,3,4-oxadiazoles, employing palladium(II) chloride as the catalyst and silver(I) oxide as an oxidant with 1,3-bis(diphenylphosphanyl)propane as a ligand. Products were formed in high yields with no byproduct. For the first time 2-alk-1-ynyl-5-(het)aryl-1,3,4-oxadiazole derivatives have
摘要 首次通过烷-2-炔酸与2-(杂)芳基的脱羧交叉偶联合成了2-alk-1-炔基-5-(杂)芳基-1,3,4-恶二唑衍生物-1,3,4-恶二唑,采用氯化钯(II)作为催化剂,氧化银(I)作为氧化剂,以1,3-双(二苯基膦基)丙烷为配体。产物以高收率形成,没有副产物。 首次通过烷-2-炔酸与2-(杂)芳基的脱羧交叉偶联合成了2-alk-1-炔基-5-(杂)芳基-1,3,4-恶二唑衍生物-1,3,4-恶二唑,采用氯化钯(II)作为催化剂,氧化银(I)作为氧化剂,以1,3-双(二苯基膦基)丙烷为配体。产物以高收率形成,没有副产物。