On the Formation of (Sulfonylamino)sulfonyl Isocyanates and (Aryloxy)sulfonyl Isocyanates
摘要:
A revised mechanism for formation of(aryloxy)sulfonyl isocyanates and (sulfonylamino) sulfonyl isocyanates is proposed. New key intermediates, 4-methylphenyl ((4-methylphenoxy)sulfonyl)-carbamate (8b) and 1-(methanesulfonyl)-1-methyl-3-((N-(methanesulfonyl)-N-methylamino)sulfonyl)-urea (8a), have been identified and synthesized. The structure of 8a has been confirmed by X-ray crystallography.