| 摘要 |
Cpds. (I) and their salts. (where R is H, Hal, OH, NO2, COOH, COOAlkyl, 1-4C alkyl, -alkoxy or -alkylthio, NH2NH alkyl, N(alkyl)2, acylamino, AlkylOCONH- or SO2NH2; R2 is H, Hal NO2, 1-4C alkyl, COOAlkyl or COOH; R2 is HaHalo, NO2 or COOH; R4 and R5 are 1-4C alkyl or together form a 2-6C polymethylene chain where one CH2 may be replaced by N-R; R is H 1-4C alkyl or -hydroxyalkyl, Ph or PhCH2; and X is O, S, SO2 or NH) are prepd. by methods for forming thiourea or cpds. (I) are converted into other derivs. (e.g. NO2 NH2, NHAcyl-NH2 etc). Thus, 4-nitro-4-isothiocyanodiphenylamine with Ba2NH gives (I R = NO2R2=R3=H, X=NH,R4=R5=Bu). |
