2-(2-{3-[(2-methylallyl)(toluene-4-sulfonyl)amino]prop-1-ynyl}benzyl)-3-oxobutyric acid ethyl ester 在
(S)-(-)-5,5-双(二苯膦基)-4,4-双-1,3-苯并间二氧杂环戊烯 、 bis(1,5-cyclooctadiene)rhodium(I) tetrafluoroborate 作用下,
以
二氯甲烷 为溶剂,
反应 16.0h,
生成 (+)-3a,5a-dimethyl-2-(toluene-4-sulfonyl)-1,2,3,3a,4,5a,6,7-octahydro-5-oxa-2-azacyclopenta[c]phenanthrene-6-carboxylic acid ethyl ester 、 (-)-3a,5a-dimethyl-2-(toluene-4-sulfonyl)-1,2,3,3a,4,5a,6,7-octahydro-5-oxa-2-azacyclopenta[c]phenanthrene-6-carboxylic acid ethyl ester