| 摘要 |
Title compds. (R = H, alkyl or halogen; R1 = H, alkyl, halogen, cyano, phenyl; R = alkyl or halogen; R1 = -COOH or -COY; Y = alkoxy, aralkoxy, aryloxy or amino; R2 = H, haloge alkyl, alkoxy, cyano, phenyl, -SO2X or -COOH; X = alkoxy, aralkoxy, aryloxy, aminoalkyl, phenyl or benzyl; R3 = H, halogen, alkyl or alkoxy; R,R1,R2,R3≠H) were manufd. by removing water from II in org. solvent.
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