Phosgene → Butyloxycarbonyl isocyanate

Participants

Reaction Steps

58.5 g of n-butyl carbamate were initially introduced as a melt and 86 g of phosgene were passed into this melt at 80° C. within 6 hours. 3.1 g (=2 mol %) of methylstearylformamide and 125 g of chlorobenzene were then added. A further 113 g of phosgene were then passed into the mixture at 130° C. within 6 hours and excess phosgene was subsequently blown out using nitrogen. The distillation of the reaction mixture produced 32.2 g (=45% of theory) of butyloxycarbonyl isocyanate having a boiling point from 52° to 54° C. at 24 mbar.

Provenance & Evidence