| 摘要 |
Title compds. I (R'=3-phenyl-2-propenoyl; R"=CH3, OCH3) were prepd. by reaction of 3-phenyl-2-propenoic acid derivs. with methyl-, or methoxy-2-hydroxy benzoic acid. Thus, 0.3M3-phenyl-2-propen-1-ol and 0.05M anhyd. H3PO4 were added to 0.1M 2-hydroxy-5-methyl benzoic acid. This mixt. was boiled at 100≦̸C for 24 hrs, cooled, and dissolved in 200mL ether. It was extracted with ether and 50mL of 10% K2CO3 soln. This al-kaline soln. was acidified with 2N-HC1, filtered, and washed with 60-70≦̸C H2O. 24g 3-phenyl-2-propenyl-2-hydroxy-5-methyl-benzoate was obtained by crystallization with 60% methanol.
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