Evidence for “stable” organocopper intermediates in the reaction between Me2CuLi·LiI and allylic sulfinyl mesylates.
摘要:
The addition of Me2CuLi.LiI to acyclic allylic sulfinyl mesylates bearing a phenyl functionality in the molecule gives rise to chiral allenes 4 and 11 in variable yields and optical purities, presumably via an unusually stable sigma-copper(III) species.
Enantioselective Carbon−Carbon Bond Formation via S<sub>N</sub>2‘ Displacements of Acyclic Allylic Mesylates<sup>1</sup>
作者:Joseph P. Marino、Alma Viso、Jae-Don Lee、Roberto Fernández de la Pradilla、Paloma Fernández、M. Belén Rubio
DOI:10.1021/jo961292i
日期:1997.2.1
S(N)2' displacement of enantiomerically pure allylic mesyloxy vinyl sulfoxides takes place with high yields and stereoselectivities. In these adducts, the newly created chiral center is adjacent to a vinyl sulfoxide functionality which should allow for subsequent chirality transfer operations. Alternatively, enantiopure alkenyl sulfones and alkenes bearing an allylic stereocenter are readily available
Evidence for “stable” organocopper intermediates in the reaction between Me2CuLi·LiI and allylic sulfinyl mesylates.
作者:Roberto Fernández de la Pradilla、M.Belén Rubio、Joseph P. Marino、Alma Viso
DOI:10.1016/s0040-4039(00)61252-2
日期:1992.8
The addition of Me2CuLi.LiI to acyclic allylic sulfinyl mesylates bearing a phenyl functionality in the molecule gives rise to chiral allenes 4 and 11 in variable yields and optical purities, presumably via an unusually stable sigma-copper(III) species.