作者:Dieter Enders、Jörg Gries
DOI:10.1055/s-2005-918421
日期:——
A versatile asymmetric synthesis of 3-substituted azetidine-2-carboxylic acids and 2-substituted azetidine-3-carboxylic acids via 1.3-amino alcohols with excellent stereoselectivities (de > 96%, ee > 96%) is reponed. The high asymmetric inductions were achieved employing the SAMP/RAMP-hydrazone methodology. A phenyl moiety was used as a synthetic equivalent of the carboxylic acid function. In addition
3-取代的氮杂环丁烷-2-羧酸和2-取代的氮杂环丁烷-3-羧酸通过具有优异立体选择性(de > 96%,ee > 96%)的1.3-氨基醇的通用不对称合成得到回应。使用 SAMP/RAMP-腙方法实现了高不对称诱导。苯基部分用作羧酸官能团的合成等价物。此外,所制备的氨基酸在不对称醛醇反应中作为有机催化剂进行了测试。