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。
Gold(I)-Catalyzed Intra- and Intermolecular Hydroamination of Unactivated Olefins
作者:Junliang Zhang、Cai-Guang Yang、Chuan He
DOI:10.1021/ja053864z
日期:2006.2.1
Ph3PAuOTf catalyzes efficient intra- and intermolecular hydroamination of unactivatedolefins with sulfonamides.
especially for the synthesis of complex molecules. Herein, we report a mild, general, and functional group tolerant intramolecular hydroamination of unactivated olefins using a Co(salen) complex, an N-fluoropyridinium salt, and a disiloxane reagent. This method, which was carried out at room temperature (or 0 °C), afforded three-, five-, six-, and seven-memberedring nitrogen-containing heterocyclic compounds
Intramolecular Aminoboration of Unfunctionalized Olefins
作者:Chun-Hua Yang、Yu-Shi Zhang、Wen-Wen Fan、Gong-Qing Liu、Yue-Ming Li
DOI:10.1002/anie.201505489
日期:2015.10.19
A direct and catalyst‐free method for the intramolecular aminoboration of unfunctionalizedolefins is reported. In the presence of BCl3 (1 equiv) as the sole boron source, intramolecular aminoboration of sulfonamide derivatives of 4‐penten‐1‐amines, 5‐hexen‐1‐amines, and 2‐allylanilines proceeded readily without the use of any catalyst. The boronic acids obtained after hydrolysis could be converted
On the understanding of BF<sub>3</sub>·Et<sub>2</sub>O-promoted intra- and intermolecular amination and oxygenation of unfunctionalized olefins
作者:Chun-Hua Yang、Wen-Wen Fan、Gong-Qing Liu、Lili Duan、Lin Li、Yue-Ming Li
DOI:10.1039/c5ra10513g
日期:——
for both intra- and intermolecular amination and oxygenation of unfunctionalized olefins. In the presence of 3 equiv. of BF3·Et2O, intramolecular hydroamination of N-(pent-4-enyl)-p-toluenesulfonamides, N-(hex-5-enyl)-p-toluenesulfonamides, intermolecular hydroamination between sulfonamides and cyclohexene, norbornene or styrene, lactonization of pent-4-enoic acid or hex-5-enoic acid compounds and esterification