[C:1]([NH:9][CH2:10][C:11]([C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1)=O)(=O)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.P12(SP3(SP(SP(S3)(S1)=S)(=S)S2)=S)=[S:20]>>[C:2]1([C:1]2[S:20][C:11]([C:13]3[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=3)=[CH:10][N:9]=2)[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1Another sample of 2,5-diphenylthiazole is prepared by reacting alpha-(benzamido) acetophenone with phosphorus pentasulfide according to the procedure given by Gabriel, Berichte 43, 137 (1910); C.A. 4, 928. The overall yield, based on phenacyl bromide, is about 25% and the product melts at 103°-106° C.
Wird geladen…