Enantioselective synthesis of cis-(2S,3R)- and trans-(2S,3S)-piperidinedicarboxylic acids using domino: allylic acetate and Ireland-Claisen rearrangements and Michael addition as the key steps
作者:Narciso M. Garrido、M. Rosa Sánchez、David Díez、Francisca Sanz、Julio G. Urones
DOI:10.1016/j.tetasy.2011.04.015
日期:2011.4
An enantioselective synthesis of (2S,3R)-piperidine-2,3-dicarboxylic acid and (2S,3S)-piperidine-2,3-dicarboxylic acid is described. This synthesis was mainly based on a δ-amino acid formation via a domino reaction: allylic acetate rearrangement, stereoselective Ireland-Claisen rearrangement and asymmetric Michael addition protocol from a Baylis–Hillman adduct, in which the cinnamaldehyde double bond
描述了(2 S,3 R)-哌啶-2,3-二羧酸和(2 S,3 S)-哌啶-2,3-二羧酸的对映选择性合成。这种合成主要基于通过多米诺反应形成的δ-氨基酸:乙酸烯丙酯重排,立体选择性爱尔兰-克莱森重排和来自Baylis-Hillman加合物的不对称Michael加成方案,其中肉桂醛双键是被掩盖的羧基官能团,硝酸铈(IV)铵可促进单脱苄基作用。