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.
2,2'-二噻吩和卤代-2,2'-二噻吩在氯化锌存在下与2-卤-4,5-二氯吡啶噁噻唑-3(2H)-酮卤化,选择性地生成相应的二卤、三卤和四卤-2,2'-二噻吩,涉及相同或不同的卤素,且产率优异。