发明公开
EP0353944A2 Aminocarbonyl-substituted pyridinesulfinic acid or salts thereof 失效
氨基羰基取代基吡啶并噻嗪盐酸盐。

Aminocarbonyl-substituted pyridinesulfinic acid or salts thereof
摘要:
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 chemi­cals, 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 pyridinecar­boxylic acid amide compound (MPCA) or aminocarbonyl-­substituted halogenopyridine compound (ACHP) to ACPS or salts thereof, and further to APCA.
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