| 摘要 |
The method of preparing a compound of the formula <IMAGE> wherein R1 is hydrogen, halogen, alkyl of 1 to 8 carbon atoms, trifluoromethyl or acetyl; n is 1 when R1 has all the defined meanings, or 2 or 3 when R1 is halogen or alkyl; R2 is hydrogen; alkyl of 1 to 16 carbon atoms; alkenyl of 2 to 16 carbon atoms; alkinyl of 2 to 16 carbon atoms; monosubstituted alkyl of 2 to 6 carbon atoms, where the substituent is hydroxyl, alkoxy of 1 to 4 carbon atoms, phenoxy, halo-phenoxy, (alkyl of 1 to 4 carbon atoms) phenoxy, (alkoxy of 1 to 4 carbon atoms)phenoxy, nitro-phenoxy, cyano-phenoxy, amino or (alkyl of 1 to 4 carbon atoms)thio; benzyl; halo-benzyl; -NR3R4; -CHR3-COOR4; or -CHR3-CONR4R5, where R3, R4 and R5 are each hydrogen or alkyl of 1 to 8 carbon atoms; and X1 and X2 are each hydrogen or halogen, which comprises reacting a compound of the formula <IMAGE> wherein n, R1, X1 and X2 have the meanings previously defined, and R1 is unsubstituted or substituted phenyl, with an amine of the formula H2N-R2 wherein R2 has the meanings previously defined, at a temperature between about 20 DEG and 160 DEG C. |
