lithium diisopropylamide mono(tetrahydrofuran) 、
3-(dicyanomethylene)-1-(4-methoxyphenyl)pyrrolidine 在
四氢呋喃 、 Acetone cardice 、
1,1-dichloromethyl-N,N-dimethylamine 、
乙醇 、
溴化钾 作用下,
反应 19.0h,
以to give 3-dicyanomethylene-4-(N,N-dimethylamino)methylene-1(4-methoxyphenyl)pyrrolidine (1.02 g, 40%), mp 218°-219° C. (decomposition), IR (KBr) 2210 cm-1 (CN), 1H NMR (Me2SO-d6) d 3.31 (6H, s, NMe2), 3.68 (3H, s, OMe), 4.23 (2H, brs, CH2), 4.44 (2H, brs, CH2), 6.60 and 6.85 (each 2H, d, Ph), 8.24 (1H, s, NCH=)的产率得到3-dicyanomethylene-4-(N,N-dimethylamino)methylene-1(4-methoxyphenyl)pyrrolidine