| 摘要 |
NEW MATERIAL:A compound expressed by formula I (m is 0.9-2.0). USE:A synthetic intermediate for magenta color of silver halide color photographic sensitive materials, pyrimidine based medicines, etc. PREPARATION:3-Amino-crotononitrile is reacted with hydrazine to form a compound expressed by formula II, which is, without isolation, chlorinated with sulfuryl chloride or chlorine (preferably the former) to afford the aimed compound expressed by formula I. |
