Optisch aktive Alkohole aus 1,3-Dioxan-4-onen: eine praktikable Variante der enantioselektiven Synthese unter nucleophiler Substitution an Acetal-Zentren
Optically Active Alcohols from 1,3-Dioxan-4-ones. A Practical Version of Enantioselective Synthesis with Nucleophilic Substitution at Acetal Centers
1,3-二恶烷-4-酮类的旋光醇。在乙缩醛中心的亲核取代对映选择性合成的实用版本。
Substituted dioxanones and dioxinones
申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
公开号:EP0244143A2
公开(公告)日:1987-11-04
Compounds of the formulae:
wherein R¹, R², R³ and R⁴ have a wide range of values are described as useful intermediates in the preparation of pharmaceuticals, etc, in particular in the preparation of optically active β-hydroxy α-substituted carboxylic acids. Processes for their preparation are described.