| 摘要 |
NEW MATERIAL:An-N-(4-chloropyrazolyl)amidoxime compound shown by formula I (R1 is H, alkyl, aryl or alkoxy; R2 is H, alkyl, aryl or heterocyclic). EXAMPLE:N-(4-Chloropyrazolyl)amidoxime shown by formula II. USE:A synthetic intermediate for 11H-pyrazolo[1,5b]-1,2,4-triazole magenta coupler useful in a sensitized material of silver halide color photography. PREPARATION:An N-pyrazolylamidoxime compound shown by formula III is chlorinated to give an N-(4-chloropyrazolyl)amidoxime compound shown by formula I. |
