反应详情

The general method of procedure B was followed with 2-butanesulfonamide (6.85 g), sodium methoxide (2.7 g), methanol (250 ml), and 4-fluorophenyl isocyanate (6.8 g) except 1N HCl was added to provide the free urea. The solid was recrystallized from benzene to provide 5.2 g of white powder with a melting point of 136-138° C.

1. additionwas added