trans-[(R,R), (SS)]-4-cyano-6,7-dimethoxy-2-methyl-3,4-dihydro-2H-quinoline-1-carboxylic acid ethyl ester 、 trans-[(R,R), (SS)]-4-cyano-6,7-dimethoxy-2-methyl-3,4-dihydro-2H-quinoline-1-carboxylic acid ethyl ester 在
硫酸 、
水 作用下,
反应 12.0h,
生成 [(R,R), (S,S)]-4-carbamoyl-6,7-dimethoxy-2-methyl-3,4-dihydro-2H-quinoline-1-carboxylic acid ethyl ester 、
[(R,S), (S,R)]-4-carbamoyl-6,7-dimethoxy-2-methyl-3,4-dihydro-2H-quinoline-1-carboxylic acid ethyl ester