Phosgene → HCID 13852723, compound

Participants

Reaction Steps

A solution of N-[butylaminocarbonyl]-2-[(1-methylethyl)sulfonyl]benzenesulfonamide (17.4 g, 0.048 mol) and 1.4-diaza[2,2,2]bicyclooctane (0.1 g) in mixed xylenes (90 ml) was heated to 135°-140°. Liquid phosgene (3.6 ml, 0.050 mol) was added at a rate to maintain an internal temperature between 125°-135°. When the addition was complete, the solution was refluxed for 2 hours, cooled to room temperature and then filtered under a nitrogen atmosphere. Removal of solvent in vacuo gave 2-[(1-methylethyl)sulfonyl]benzenesulfonyl isocyanate, which was used immediately without further purification.

Provenance & Evidence