反应详情

Following the procedure of Example 1, Part B, but substituting 39.11 gm. (0.121 mole) dimethyl-4-(o-chlorophenyl)-4-cyanopimelate (prepared in Part A, above) for the dimethyl ester of 4-(p-chlorophenyl)-4-cyanopimelic acid, and using 780 ml. of the tetrahydrofuran, 27.4 gm. (0.24 mole) of the potassium tert-butoxide, and 195 ml. of the 2.5 N acetic acid instead of the 700 ml., the 24.4 gm (0.218 mole), and the 175 ml., respectively, there is prepared 33.4 gm. (95% yield) of 2-carbomethoxy-4-cyano-4-(o-chlorophenyl)cyclohexanone as a crystalline solid having a melting range of 113° to 118° C.

1. custom, respectively, there is prepared 33.4 gm