Esterification of unprotected sucrose with acid chlorides in aqueous medium: kinetic reactivity versus acyl- or alkyloxycarbonyl-group migrations
作者:Sophie Thévenet、Angelika Wernicke、Stanislaw Belniak、Gérard Descotes、Alain Bouchu、Yves Queneau
DOI:10.1016/s0008-6215(99)00079-8
日期:1999.5
between formation, migration and hydrolysis of sucrose mono-esters and -carbonates confirmed that the pre-eminent reactivity of some secondary positions persists in aqueous medium, and in particular, OH-2, even though fast subsequent migrations finally enrich the mixture in compounds substituted at the primary positions. The reaction was also shown to depend strongly on the starting sucrose concentration
摘要对蔗糖单酯和碳酸酯的形成,迁移和水解之间竞争的研究证实,即使在随后的快速迁移中,某些次要位置的反应仍在水性介质(尤其是OH-2)中持续存在。使混合物中的主要位置取代的化合物富集。与较小的链相比,在疏水性酰化剂的情况下,该反应还显示出强烈依赖于起始蔗糖的浓度,从而提供了更高的取代衍生物。