C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 227/18 (2006.01) C07C 227/02 (2006.01) C07C 229/52 (2006.01)
Patent
CA 2066976
An improvement in a method of producing a keto acid having the general formula of (see formula I) wherein R1 and R2 independently represent an alkyl of 1-6 carbons or a cycloalkyl of 4-8 carbons, in an organic solvent, which comprises reacting a m-aminophenol having the general formula of (see formula II) wherein R1 and R2 are the same as above, with phthalic anhydride, the improvement comprising depositing the resultant keto acid in the solvent while effecting the reaction in a slurry.
Kondo Masahiro
Ooyoshi Hajime
Sakamoto Naoya
Tanaka Michio
Mitsui Chemicals Inc.
Mitsui Petrochemical Industries Ltd.
Smart & Biggar
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