A Water/Toluene Biphasic Medium Improves Yields and Deuterium Incorporation into Alcohols in the Transfer Hydrogenation of Aldehydes
作者:Margarita Ruiz‐Castañeda、Lucía Santos、Blanca R. Manzano、Gustavo Espino、Félix A. Jalón
DOI:10.1002/ejic.202100022
日期:2021.4.15
hydrogen source. Moreover, furfural and glucose, were selectively reduced to the valuable alcohols, furfuryl alcohol and sorbitol. The processes were carried out in neat water or in a biphasic water/toluene system. The biphasic system allowed easy recycling, higher yields, and higher selective D incorporation (using D2O/toluene). The deuteration took place due to an efficient effective M–H/D+ exchange
氘标记是一个有趣的过程,可导致化合物在不同领域中的使用。我们描述了醛的转移氢化和D 2 O中获得的醇的选择性C 1氘化,D 2 O是唯一的氘源。在[RuCl(p-cymene)(dmbpy)] BF 4(dmbpy = 4,4'-二甲基-2,2'-联吡啶)的存在下,还原了不同的芳族,烷基和α,β-不饱和醛。预催化剂和HCO 2 Na / HCO 2H为氢源。此外,糠醛和葡萄糖被选择性地还原为有价值的醇,糠醇和山梨糖醇。该方法在纯水中或在两相水/甲苯体系中进行。双相体系允许容易的回收利用,更高的产率和更高的选择性D掺入(使用D 2 O /甲苯)。氘化的发生是由于D 2 O进行了有效的有效M–H / D +交换,使得D +(极性)的极性反转。还包括了DFT计算,该计算解释了在水中的催化行为。