FeBr3-catalyzed regioselective intramolecular sulfenoamination of unactivated terminal olefins
作者:Lin-Chuang Zheng、Lin Li、Lili Duan、Yue-Ming Li
DOI:10.1016/j.tet.2019.130619
日期:2019.11
A method for regioselective intramolecular sulfenoamination of unactivated terminal olefins was reported. Using sulfonyl hydrazides as the sulfur sources, FeBr3 as the catalyst and (NH4)2S2O8 as the oxidant, different sulfenylmethylpyrrolidines and sulfenylmethylpiperidines were obtained in moderate to high yields via intramolecular sulfenoamination of (sulfon)amidopentenes or (sulfon)amidohexenes
报道了未活化的末端烯烃的区域选择性分子内磺酰胺化的方法。以磺酰肼为硫源,以FeBr 3为催化剂,以(NH 4)2 S 2 O 8为氧化剂,通过(磺)酰胺基戊二烯或(磺)的分子内磺酰胺化反应,以中等至高收率获得了不同的亚磺酰基甲基吡咯烷和亚磺酰基甲基哌啶。氨基己烯。
Regioselective (Diacetoxyiodo)benzene-Promoted Halocyclization of Unfunctionalized Olefins
作者:Gong-Qing Liu、Yue-Ming Li
DOI:10.1021/jo501739j
日期:2014.11.7
A metal-free method for intramolecular halocyclization of unfunctionalizedolefins was detailed. (Diacetoxyiodo)benzene (PIDA) was very effective for haloamidation, haloetherification, and halolactonization of unfunctionalizedolefins. In the presence of 1.1 equiv of PIDA and suitable halogen sources, a variety of unfunctionalizedolefins could be converted to the corresponding 1,2-bifunctional cyclic