Methyl Isocyanate → 1,3-Dimethyl-3-[5-(beta-chloro-alpha,alpha-dimethylethyl)-1,3,4-thiadiazol-2-yl]urea

Participants

Reaction Steps

To a stirred suspension of 6.0 g of 2-methylamino-5-(β-chloro-α,α-dimethylethyl)-1,3,4-thiadiazole in 100 ml of benzene was added 2.0 g of methyl isocyanate. The mixture became homogenous upon heating to reflux temperature and reflux was maintained for 2 hrs. After cooling, the benzene was removed at reduced pressure and the precipitate collected, giving 7.4 g (95%), m.p. 159°-161°. An analytical sample was prepared from methylene chloride-ether, m.p. 160°-161°.

Provenance & Evidence