Facile one-pot preparation of allylic alcohols with a fluorine-containing alkyl group at the γ-position
摘要:
A useful one-pot preparation method of allylic alcohols with fluorinated alkyl groups at the gamma position was developed from the corresponding enoates by way of the DIBAL-mediated half reduction, followed by nucleophilic attack of Grignard reagents to aldehydes equilibrating with aluminium acetals. (C) 2013 Elsevier B.V. All rights reserved.
Direct hydroperfluoroalkylation of ethyl propiolate with perfluoroalkyl iodides and bromides by a Co/Zn bimetal redox system
作者:Chang-Ming Hu、Yao-Ling Qiu
DOI:10.1016/s0022-1139(00)81261-0
日期:1991.11
The addition of perfluoroalkyl halides RfX (1) (X=I, Br) to ethyl propiolate (2) has been performed smoothly with zinc powder and a catalytic amount of bromo(pyridine)cobaloxime(III) (3) in ethanol. The product (4) was a mixture of Z- and E-isomers, with the former predominating.
用锌粉和在乙醇中催化量的溴(吡啶)钴氧肟(III)(3)平稳地将全氟烷基卤化物R f X(1)(X = I,Br)添加到丙酸乙酯(2)中。产物(4)是Z-和E-异构体的混合物,其中前者占主导地位。
Photoinduced addition and addition–elimination reactions of perfluoroalkyl iodides to electron-deficient olefins
Photoinduced radical perfluoroalkylation of various simple electron-deficient olefins was achieved in the presence of an aqueous Na2S2O3 solution. The reactions proceeded smoothly to give addition or addition–elimination products. The ability of the products to be used as radical precursors or Michael acceptors was also demonstrated.
在Na 2 S 2 O 3水溶液的存在下,实现了各种简单的缺电子烯烃的光诱导自由基全氟烷基化。反应进行顺利,得到加成或加成消除产物。还证明了该产品用作自由基前体或迈克尔受体的能力。
Facile one-pot preparation of allylic alcohols with a fluorine-containing alkyl group at the γ-position
A useful one-pot preparation method of allylic alcohols with fluorinated alkyl groups at the gamma position was developed from the corresponding enoates by way of the DIBAL-mediated half reduction, followed by nucleophilic attack of Grignard reagents to aldehydes equilibrating with aluminium acetals. (C) 2013 Elsevier B.V. All rights reserved.