(1-Chloroethyl)carbamyl chloride → Vinyl isocyanate

Participants

Reaction Steps

57 parts of 1-chloroethylcarbamic acid chloride are dissolved in 520 parts of ethyl isocyanate at 22° C. and dry nitrogen is blown through the solution, a Raschig ring column being used to achieve a preliminary separation of the 3-component mixture (ethyl isocyanate, vinyl isocyanate and 1-chloroethyl isocyanate) in the column. The reaction mixture is subjected to fractional distillation for 3 hours. 14 parts (50.5% of theory) of vinyl isocyanate of boiling point 38.5° C./1013 mbar and 466 parts of ethyl isocyanate of boiling point 60° C./1013 mbar are obtained.

Provenance & Evidence