Polar effects in free-radical reactions. New synthetic developments in the functionalization of heteroaromatic bases by nucleophilic radicals
作者:Francesco Minisci、Attilio Citterio、Elena Vismara、Claudio Giordano
DOI:10.1016/s0040-4020(01)97191-1
日期:1985.1
nucleophilic carbon-centered radicals is furtheron developed by the following new achievements: i) utilization of the redoc system in several solvents; ii) utilization of benzoyl peroxide in alcohols; iii) carbamoylation by HCONH2 and H2O2 in the presence of catalytic amounts of Fe(II). These systems allow to obtain either substitution till now tried without success or reactions of industrial interest.
下列新成果进一步发展了质子化杂芳族碱基被亲核碳中心自由基直接取代的综合兴趣:ii)酒精中过氧化苯甲酰的利用;iii)在催化量的Fe(II)存在下通过HCONH 2和H 2 O 2进行氨基甲酰基化。这些系统允许获得直到现在为止一直没有成功的替代方案,或者获得工业利益的反应。极性效应在确定反应性,选择性和合成应用方面起主要作用;特别强调了吡啶基类型的强亲核中间基团在重新麦芽糖化步骤中的作用。