Regioselective reaction of allylbenzotriazoles with aldehydes and ketones in the presence of lithium
作者:Alan R. Katritzky、Clara N. Fali、Ming Qi
DOI:10.1016/s0040-4039(97)10601-3
日期:1998.1
The reactions of α- and γ-substituted allylbenzotriazoles 2, 3 and 4 with an excess of lithium in THF at −78 °C generate various allyllithiums, which react readily with aldehydes and ketones with high regioselectivity to give predominantly the branched products 5 in excellent yields.
α和γ取代的烯丙基苯并三唑2、3和4与过量锂在THF中在-78°C的反应生成各种烯丙基锂,这些烯丙基锂易于与醛和酮反应,并具有较高的区域选择性,从而以优异的纯度得到主要的支链产物5产量。