methyl (Z)-2-(3-nitrobenzylidene)-3-oxobutanoate 、
(E)-3-(3-Hydroxy-propylamino)-but-2-enoic acid ethyl ester 以
甲醇 为溶剂,
反应 24.0h,
以21%的产率得到ethyl 8-(3-nitrophenyl)-6,9a-dimethyl-9-carbomethoxy-3,4,9,9a-tetrahydro-2H,8H-pyrido<2,1-b>oxazine-7-carboxylate