Diphosgene → 4-Chloro-5-cyclopentyloxy-2-fluorophenylisocyanate

Participants

Reaction Steps

An ethyl acetate solution (5 ml) of trichloromethyl chloroformate (2.00 g, 10.0 mmol) was gradually dropwise added to an ethyl acetate solution (25 ml) of 2-fluoro-4-chloro-5-cyclopentyloxyaniline (2.30 g, 10.0 mmol) at room temperature. After addition, the whole was heated to remove ethyl acetate therefrom by distillation. As a result, 2-fluoro-4-chloro-5-cyclopentyloxyphenylisocyanate was obtained almost quantitatively.

Provenance & Evidence