DIRECT ANTI-MARKOVNIKOV ADDITION OF ACIDS TO ALKENES
申请人:THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
公开号:US20160096791A1
公开(公告)日:2016-04-07
A method of making an anti-Markovnikov addition product, comprises reacting an acid with an alkene or alkyne in a dual catalyst reaction system to the exclusion of oxygen to produce said anti-Markovnikov addition product; the dual catalyst reaction system comprising a single electron oxidation catalyst in combination with a hydrogen atom donor catalyst. Dual catalyst composition useful for carrying out such methods are also described.
N-Heterocyclic carbene–gold(I)-catalyzed carboheterofunctionalization of alkenes with arylboronic acids
作者:Shifa Zhu、Lijuan Ye、Wanqing Wu、Huanfeng Jiang
DOI:10.1016/j.tet.2013.09.097
日期:2013.12
A new approach to the synthesis of pyrrolidine, tetrahydrofuran, and imidazolidin-2-one via N-heterocyclic carbene–gold(I)-catalyzed intramolecular amino- or oxyarylation reactions from a wide variety of alkene substrates such as N-allyl amides, alcohols, carboxylic acids, and ureas in the presence of Selectfluor under mild conditions has been developed.
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
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