Production methods of alpha, alpha, alpha-trifluoromethylphenyl-substitute-d benzoic acid and intermediate therefor
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United States of America Patent
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Issued Date -
Sep 6, 2001
app pub date -
Jan 31, 2001
filing date -
Feb 2, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention relates to a production method of compound [V] useful as an intermediate for medicaments and agrochemicals. The method includes reacting compound [III] with hexamethylenetetramine under heating to give compound [IV], and oxidizing the obtained compound [IV] with a halous acid salt or a ruthenium compound. According to the present invention, moreover, an organometallic compound having a tolyl group and compound [I] are cross-coupled in the presence of a catalyst to give compound [II] useful as an intermediate for medicaments and agrochemicals. The compound [II] is halogenated to give compound [III]. 1 wherein X is halogen atom.
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