Selective Halogenation of Bithiophenes Using 2-Halopyridazin-3(2H)-ones under Ambient Conditions
作者:Jong Park、Yong-Jin Yoon、Kwang-Ju Jung、Seung Kang、Ju-Eun Won、Song-Eun Park、Ki Park、Sang-Gyeong Lee
DOI:10.1055/s-0028-1087536
日期:2009.2
2,2′-Bithiophene and halogenated-2,2′-bithiophenes were halogenated with 2-halo-4,5-dichloropyridazin-3(2H)-one in the presence of zinc halide to give selectively the corresponding dihalo-, trihalo-, and tetrahalo-2,2′-bithiophenes involving the same or different halogens in excellent yields, respectively.