三光气 、 trans-methyl 4-[(1-{[2-cyano-3-(trifluoromethyl)phenyl]methyl}-6-methyl-2,4-dioxo-1,2,3,4-tetrahydroquinazolin-3-yl)methyl]cyclohexane-1-carboxylate 在
三乙胺 作用下,
反应 16.0h,
以88%的产率得到trans-methyl 4-[(6-methyl-2,4-dioxo-1,2,3,4-tetrahydroquinazolin-3-yl)methyl]cyclohexane-1-carboxylate