Methallyl chloride
Methallyl chloride is the organic compound with the formula CH=C(CH)CHCl. It is a colorless liquid and a lacrymator. Its properties are similar to those of allyl chloride. It is a strong alkylating agent used to install isobutenyl groups. Reactivity. It is also a precursor to methallyl ligand. It is an isomer of crotyl chloride. Methylenecyclopropane can be synthesised via an intramolecular cyclisation reaction from methallyl chloride by treatment with a strong base such as sodium amide.