作者:Catalina Gurgui-Ionescu、Loïc Toupet、Lycia Uttaro、Alain Fruchier、Véronique Barragan-Montero
DOI:10.1016/j.tet.2007.07.002
日期:2007.9
comparative study of the Mitsunobu reaction at C1 and C6 positions of mannose using bis(2,2,2-trifluoroethyl) malonate as nucleophile is disclosed. While C-alkylation was predominant at the C6 position, only O-alkylation occurred at the anomeric position of the carbohydrate. Some factors playing a role in the selectivity of the reaction are discussed and an inverse mechanism of the Mitsunobu reaction for the
公开了使用双(2,2,2-三氟乙基)丙二酸酯作为亲核试剂在甘露糖的C1和C6位置进行Mitsunobu反应的比较研究。尽管C-烷基化主要发生在C6位,但只有O-烷基化发生在碳水化合物的异头位置。讨论了影响反应选择性的一些因素,并提出了Mitsunobu反应对异头位置的逆向机理。