Intramolecular Cycloaddition of the Azomethine Ylides Derived from α-Amino Acids or Esters and 5-Oxo-6-heptenals or 4-Oxo-5-hexenals
作者:Shuji Kanemasa、Kenji Doi、Eiji Wada
DOI:10.1246/bcsj.63.2866
日期:1990.10
Intramolecular cycloadditions of the azomethine ylides bearing a carbonyl-activated olefinic moiety, generated from α-amino acids or esters and 5-oxo-6-heptenals or 4-oxo-5-hexenals, produce the stereoselective internal cycloadducts either to olefin or carbonyl dipolarophilic function with normal or inverse regioselectivity, depending upon the types of ylides as well as the intervening chain length
由α-氨基酸或酯和5-氧-6-庚烯醛或4-氧-5-己烯醛产生的带有羰基活化的烯烃部分的偶氮甲碱叶立德的分子内环加成,产生到烯烃或羰基亲二极体的立体选择性内环加合物功能具有正常或反向区域选择性,取决于叶立德的类型以及中间链长。当使用 2-苯基-4-噻唑烷羧酸及其甲酯时,已经实现了极高的非对映面选择性。