Phosgene → N,N-dimethyl-2-chloro-5-isocyanatobenzenesulfonamide

Beteiligte Stoffe

Reaktionsschritte

50 g of N,N-dimethyl-2-chloro-5-aminobenzenesulfonamide (Example A-3 above) was treated with an excess of phosgene in ethyl acetate as is generally described in "Organic Functional Group Preparations" by S. R. Sandler and W. Karo on pages 364-365 (Academic Press, N.Y., 1983) (preparation of organic isocyanates), which disclosure is herein incorporated by reference. 48 g of the title compound was isolated as a tan solid with a melting point of 82°-85° C.

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