C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/261, 260/291
C07D 213/82 (2006.01)
Patent
CA 1326854
Abstract of the Disclosure The present invention provides aminocarbonyl- substituted pyridinesulfinic acid (ACPS) or salts thereof as the precursor of aminosulfonyl-substituted pyridinecarbonic acid amide compound (APCA) which is useful as the starting material for agricultural chemi- cals, medicine, etc. Moreover, the preparation process of the present invention is an industrially advantageous preparation process which is capable of preparing in a series of steps from mercapto-substituted pyridinecar- boxylic acid amide compound (MPCA) or aminocarbonyl- substituted halogenopyridine compound (ACHP) to ACPS or salts thereof, and further to APCA.
607500
Awazu Takao
Haga Takahiro
Isogai Tatsuo
Murai Shigeo
Tanaka Toshihiro
Ishihara Sangyo Kaisha Ltd.
Riches Mckenzie & Herbert Llp
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