[NH2:1][CH2:2][CH2:3][C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[CH3:10].[Cl:11][C:12]1[CH:20]=[CH:19][C:15]([C:16](Cl)=[O:17])=[CH:14][CH:13]=1.O>N1C=CC=CC=1>[Cl:11][C:12]1[CH:20]=[CH:19][C:15]([C:16]([NH:1][CH2:2][CH2:3][C:4]2[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=2[CH3:10])=[O:17])=[CH:14][CH:13]=11-Amino-2-(2-methylphenyl)ethane (13.5 g) was dissolved in 80 ml of pyridine. While the solution was cooled with stirring, 18 g of 4-chlorobenzoyl chloride was added dropwise. They were reacted at room temperature for 5 hours. Pouring of the reaction mixture into cold water gave a precipitate of crystals. The crystals were washed in water, dried, and recrystallized from cyclohexane to afford 19.2 g of 1-(4-chlorobenzoylamino)-2-(2-methylphenyl)ethane having a melting point of 95° to 96° C.
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