Methyl chloroformate


Methyl chloroformate is the methyl ester of chloroformic acid. It is an oily colorless liquid, although aged samples appear yellow. It is also known for its pungent odor.

Preparation

Methyl chloroformate can be synthesized using methanol and phosgene.
COCl2 + MeOH-> C2H3ClO2 + HCl

Uses

Methyl chloroformate is used in organic synthesis for the introduction of the methoxycarbonyl functionality to a suitable nucleophile.

Safety

Methyl chloroformate, if heated, releases phosgene. It produces hydrogen chloride upon contact with water. It will cause skin damage if in contact with skin.