[NH2:1][C:2]1[CH:15]=[CH:14][C:13]([Cl:16])=[CH:12][C:3]=1[C:4]([C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1)=[O:5].[CH:17](O)=[O:18]>>[C:4]([C:3]1[CH:12]=[C:13]([Cl:16])[CH:14]=[CH:15][C:2]=1[NH:1][CH:17]=[O:18])(=[O:5])[C:6]1[CH:7]=[CH:8][CH:9]=[CH:10][CH:11]=1A mixture of 100 g (0.43 mole) of 2-amino-5-chlorobenzophenone and 500 g formic acid was refluxed for 1 hr, and then cooled and poured into 1 l. of ice water. The solid that precipitated was collected on a filter, washed with water, dried in air, and recrystallized from heptane-benzene to give 103.5 g (93%) of the formamide as colorless crystals, mp 89°-91°.
Wird geladen…