Lithiated benzyllithiums from chlorobenzyl chlorides by a DTBB-catalysed lithiation
作者:Cecilia Gómez、Fernando F. Huerta、Miguel Yus
DOI:10.1016/s0040-4039(96)02393-3
日期:1997.1
The reaction of 2-, 3- or 4-chlorobenzyl chlorides (1a-c) with an excess of lithium and a catalytic amount of DTBB (7 mol%) in the presence of different electrophiles [PriCHO, ButCHO, Et2CO, (CH2)5CO, PhCOMe, Me3SiCl] in THF at −50°C leads after hydrolysis with water, to the expected dioles or disilylated compounds 2aa-2cf.
2-反应,3-或4-氯苄基氯化物(1A-1C与过量锂和DTBB(7摩尔%)的在不同亲电[Pr中存在催化量)的我CHO,卜吨CHO,等在-50°C下于THF中的2 CO,(CH 2)5 CO,PhCOMe,Me 3 SiCl]在THF中用水水解后,可生成预期的二醇或二甲硅烷基化化合物2aa-2cf。