(3R,9aR)-3-[2-(3,5-bis(trifluoromethyl)-benzoyl)-7-trifluoromethanesulfonyloxy-1,3,4,8,9,9a-hexahydro-2H-pyrido[1,2-a]pyrazin-3-ylmethyl]-indole-1-carboxylic acid tert-butyl ester 、
(3R,9aR)-3-[2-(3,5-bis(trifluoromethyl)benzoyl)-7-trifluoromethanesulfonyloxy-1,3,4,6,9,9a-hexahydro-2H-pyrido[1,2-a]pyrazin-3-yl-methyl]-indole-1-carboxylic acid tert-butyl ester 在
四(三苯基膦)钯 4-三正丁基锡基吡啶 、
lithium chloride 作用下,
以
1,4-二氧六环 为溶剂,
反应 20.0h,
生成 (3R,9aR)-3-[2-(3,5-bis(trifluoromethyl)-benzoyl)-7-pyridin-4-yl-1,3,4,8,9,9a-hexahydro-2H-pyrido[1,2-a]pyrazin-3-ylmethyl]-indole-1-carboxylic acid tert-butyl ester 、 (3R,9aR)-3-[2-(3,5-bis(trifluoromethyl)-benzoyl)-7-pyridin-4-yl-1,3,4,6,9,9a-hexahydro-2H-pyrido[1,2-a]pyrazin-3-ylmethyl]-indole-1-carboxylic acid tert-butyl ester