Synthesis of asymmetric 1-amino-2-phenylcyclopropanecarboxylic acids by diastereoselective cyclopropanation of highly functionalized homochiral olefines
作者:Ma Dolores Fernández、Ma Pilar de Frutos、José L. Marco、Eldiberto Fernández-Alvarez、Manuel Bernabé
DOI:10.1016/s0040-4039(00)99413-9
日期:1989.1
Homochiral benzylidenediketopiperazine and α-benzoylaminocinnamic esters react with diazomethane giving high to good diastereomeric ratios of spiropyrazoline derivatives which, on photolysis and acid hydrolysis of the resulting spirocyclopropyl compounds gave, respectively, (+)- and (−)-1-amino-2-phenylcyclopropanecarboxylic acids.
同型手性苄基二烯酮基哌嗪和α-苯甲酰基氨基肉桂酸酯与重氮甲烷反应,可得到螺吡唑啉衍生物的非对映异构体比率高至良好,它们在进行光解和酸水解后所得到的螺环丙基化合物分别得到(+)-和(-)-1-氨基-2-苯环丙烷羧酸。