60582-30-1Relevant articles and documents
Selective synthesis of 4,6-O-alkenylidene and -benzylidene acetals from unprotected sucrose by lanthanide(III) resin-catalyzed transacetalization
Porwanski,Salanski,Descotes,Bouchu,Queneau
, p. 525 - 528 (2007/10/03)
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 α,β-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.
Acetal Formation Facilitated in 2-Hydroxyaryl Aldehydes by Intramoleculedar Acyl Group Transfer
Liepa, Andris J.,Morton, Trevor C.
, p. 1747 - 1757 (2007/10/02)
Convenient preparations of synthetically useful acetals, a dithioacetal and an oxathiolan from the 2-acyl derivatives of 2-hydroxyaryl aldehydes under basic conditions are described.The mildness of the reaction conditions is illustrated by the formation of an ethoxycarbonyl-substituted dioxolan.The reaction is dependent upon an intramolecular acetyl group transfer and the mechanism of the reaction is discussed.Some broader implications of this type of acyl transfer are discussed.