(+/-)-erythro-N-methyl-1-<2-ethenyl-4,5-(methylenedioxy)phenyl>-2-<2-<(N,N-diethylamino)carbonyl>-3,4-(methylenedioxy)phenyl>propylamine 在
叔丁基锂 作用下,
以
四氢呋喃 为溶剂,
以84%的产率得到(+/-)-trans-N-methyl-3-<2-ethenyl-4,5-(methylenedioxy)phenyl>-4-methyl-7,8-(methylenedioxy)-3,4-dihydro-1(2H)-isoquinolone