Process for preparing arylsulfonyl isocyanates by phosgenation of arylsulfonamides, and the products of the process and their use.

摘要

An improved process for preparing arylsulfonyl isocyanates by phosgenation of arylsulfonamides in the presence of a catalytic quantity of a hydrocarbyl isocyanate and a catalytic quantity of a tertiary amine base. The sulfonyl isocyanates are useful intermediates.