An Improved Procedure for the Preparation of the<i>O</i>,2-Dianion of Allyl Alcohol
作者:Sayee G. Hegde、David C. Myles
DOI:10.1080/00397919708006818
日期:1997.6
Abstract An improved procedure for the preparation of the O,2-dianion of allyl alcohol is described. The use of the magnesium alkoxide of 2-bromopropen-1-ol instead of the known lithium salt, suppresses dehydrohalogenation upon treatment with tert-butyl lithium and furnishes the dianion. Addition of this dianion to a variety of carbonyl compounds affords the expected products in good yield.
摘要 描述了一种制备烯丙醇 O,2-二阴离子的改进方法。使用2-溴丙烯-1-醇的醇镁代替已知的锂盐,在用叔丁基锂处理时抑制脱卤化氢并提供二价阴离子。将此二价阴离子添加到各种羰基化合物中,以良好的收率提供预期的产物。