Process for preparing arylsulfonyl isocyanates by phosgenation o

Details Process for preparing arylsulfonyl isocyanates by phosgenation o Process for preparing arylsulfonyl isocyanates by phosgenation o

1980-10-01

1983-04-12

Gerstl, Robert

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C14379

Patent

active

043797695

ABSTRACT:
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.

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patent: 3379758 (1968-04-01), Ulrich
patent: 3484466 (1969-12-01), Sayigh et al.
patent: 3689549 (1972-09-01), Williams
Ulrich et al., J. Org. Chem., 31, 2658 (1966).
Kurzer, Chem. Rev., 50, 1-46 (1951).
Fiesen et al., Reagents for Organic Synthesis, 1, 856-8,1200-2 (1967), 2 106,328-9 (1969).

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