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本文研究了利用二 (三氯甲基 )碳酸酯代替光气与吡唑磺酰胺反应 ,然后再与 2 -氨基 - 4,6-二甲氧基嘧啶反应合成吡嘧磺隆的方法。反应安全、条件温和 ,从根本上消除了光气的危险性
In this paper, the synthesis of pyrazosulfuron ethyl using bis (trichloromethyl) carbonate instead of phosgene and pyrazole sulfonamide and then with 2 - amino - 4,6 - dimethoxypyrimidine was studied. The reaction is safe and the conditions are mild, which fundamentally eliminates the danger of phosgene