发明授权
US3897487A Preparation of 5-fluoro-2-methyl-1-(p-methylsulfinylbenzylidene) indenyl-3-acetic acid 失效
5-氟-2-甲基-1-(对甲基亚磺酰基亚苄基)茚基-3-乙酸的制备

Preparation of 5-fluoro-2-methyl-1-(p-methylsulfinylbenzylidene) indenyl-3-acetic acid
摘要:
Process for preparing 5-fluoro-2-methyl-1-(pmethylsulfinylbenzylidene)-indenyl-3-acetic acid, by reacting 5fluoro-2-methylindene-1,3-dione-3,3''-o-ethylene ketal with a pmethylsulfinylbenzyl compound, hydrolysis, and subsequent reaction with a malonic acid ester.
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