Selective synthesis of 4,6-O-alkenylidene and -benzylidene acetals from unprotected sucrose by lanthanide(III) resin-catalyzed transacetalization

被引：0

作者：

Porwanski, S ^{[1
]}

Salanski, P ^{[1
]}

Descotes, G ^{[1
]}

Bouchu, A ^{[1
]}

Queneau, Y ^{[1
]}

机构：

[1] Eridania Beghin Say, Lab Sucrochim Beghin Say, CNRS UMR 143, F-69603 Villeurbanne, France

来源：

SYNTHESIS-STUTTGART | 2000年 / 04期

关键词：

sucrose; acetals; lanthanides; heterogeneous catalysis; carbohydrates; resins; transacetalization;

D O I：

暂无

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Lanthanide cation exchanged resins were used as catalysts for the acetalization of sucrose. Ytterbium(III)- and erbium(III)-exchanged resins promote the transacetalization of dialkyl acetals of alpha,beta-unsaturated aldehydes. A two-step one-pot procedure provides direct access from the unsaturated aldehyde to a series of sucrose 4,6-acetals in good yields from unprotected sucrose without concomitant glycosidic bond cleavage.

引用

页码：525 / 528

页数：4