| 摘要 |
1507429 Amides and thioamides ANIC SpA 15 April 1976 [23 April 1975] 15729/76 Heading C2C [Also in Division C3] Compounds X-A-NH-CO-X<SP>1</SP>-Y, where X is H or a group -NHCOSR, -NH 2 , -ZNH 2 or -ZNHCOSR (Z being derived by removing a hydrogen atom from an alkyl, aryl, cycloalkyl, aralkyl or alkaryl radical and R being hydrocarbyl); Y is an organic radical; X<SP>1</SP> is O, S or NH; and A is arylene optionally substituted by one or more of halogen, hydrocarbyl and alkoxy or optionally substituted alkylene are made by reacting an ester X-A-NH-COSR with a compound Y-X<SP>1</SP>-H and, if desired, removing a by-product H-S-R. |
