Benzhydryl protection of primary and secondary alcohols has been reported previously via reaction with metal alcoholates. Our aim was to find generally useful and very mild conditions for the alcoholic protection and deprotection of nucleosides with the diphenylmethyl group. This was accomplished for some pyrimidine nucleosides using PdCl2 as the transition metal catalyst, and with optimization yields of 70–90% have been achieved. A lack of solubility of other nucleosides hampers its more general use.
已有人报道苯甲基保护一类和二类醇的方法,通过与
金属烷氧化物反应。我们的目标是寻找普遍适用且非常温和的条件,用于核苷的醇保护和去保护,采用二苯基甲基基团。我们在一些
嘧啶核苷中实现了这一点,使用PdCl2作为过渡
金属催化剂,并通过优化实现了70-90%的产率。然而,其他核苷的溶解性不足限制了其更广泛的应用。