Regio- and Enantioselective Aminofluorination of Alkenes
作者:Wangqing Kong、Pascal Feige、Teresa de Haro、Cristina Nevado
DOI:10.1002/anie.201208471
日期:2013.2.25
Enantio‐ and regioselective: The intramolecular enantioselective aminofluorination of unactivated olefins was achieved by using a chiral iodo(III) difluoride salt. A highly regioselective aminofluorination of styrenes to access 2‐fluoro‐2‐phenylethanamines was also developed.
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
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
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.
Transition-metal-free visible-light photoredox catalysis at room-temperature for decarboxylative fluorination of aliphatic carboxylic acids by organic dyes
作者:Xinxin Wu、Chunna Meng、Xiaoqian Yuan、Xiaotong Jia、Xuhong Qian、Jinxing Ye
DOI:10.1039/c5cc04527d
日期:——
We report herein an efficient, general and green method for decarboxylative fluorination of aliphatic carboxylicacids. By using a transition-metal-free, organocatalytic photoredox system, the reaction of various aliphatic carboxylicacids...