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KMID : 0370219960400060640
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Yakhak Hoeji
1996 Volume.40 No. 6 p.640 ~ p.645
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Synthesis of 2(3H)-Benzofuranone Derivatives from Substituted Phenols Using Methyl 2-chloro-2-(methylthio)acetate
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최홍대/Choi HD
김미헌/신상훈/손병화/Kim MH/Shin SH/Son BW
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Abstract
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5-Alkyl-2(3H)-benzofuranones(3a-e) were prepared from Friedel-Crafts reaction of 4-alkylphenols with methyl 2-chloro-2-(methylthio)acetae(1) followed by the treatment of zinc dust-acetic acid. The reaction of disubstituted phenols with 1 in the presence of stannic chloride afforded 3-methyltWa-2(3H)-benzofuranone derivatives(11a-c), which were readily converted into 2(3H)-benzofuranone derivatives(12a-c) by desulfurization with zinc dust-acetic acid.
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