Palladium-Catalyzed Intramolecular Aminofluorination of Unactivated Alkenes
作者:Tao Wu、Guoyin Yin、Guosheng Liu
DOI:10.1021/ja9076588
日期:2009.11.18
A novel palladium-catalyzedintramolecular oxidative aminofluorination of unactivatedalkenes has been developed, in which AgF was used as a key fluorinating reagent and PhI(OPiv)(2) as oxidant. The reaction afforded vicinal fluoroamine products with very high regioselectivity. A Pd(II/IV) catalytic cycle was proposed, and preliminary mechanistic studies indicated that direct reductive elimination
Metal-free intramolecular aminofluorination of alkenes mediated by PhI(OPiv)2/hydrogen fluoride–pyridine system
作者:Qing Wang、Wenhe Zhong、Xiong Wei、Maoheng Ning、Xiangbao Meng、Zhongjun Li
DOI:10.1039/c2ob26664d
日期:——
A convenient, metal-free intramolecular aminofluorination of alkenes has been developed. Employing readily available PhI(OPiv)2 and hydrogen fluorideâpyridine in the presence of BF3·OEt2, tosyl-protected pent-4-en-1-amines were converted to 3-F-piperidines in one step in good yields as well as high stereoselectivity.