Process for the industrial synthesis of vinyl and...

Details Process for the industrial synthesis of vinyl and... Process for the industrial synthesis of vinyl and...

C - Chemistry, Metallurgy

07

C

260/467

C07C 69/96 (2006.01) C07F 3/10 (2006.01)

Patent

CA 1113111

ABSTRACT OF THE DISCLOSURE The invention relates to a process for the industrial scale synthesis of vinyl and isopropenyl chloroformates and thiochloroformates whereby phosgene or thiophosgene is reacted, at between 20 and 70°C, with a mercury salt XHgCH2CRO, in which X = Cl or -CH2CRO, where R = H or CH3, in the presence of a solvent or a mixture of solvents having a dielectric constant greater than 10. The process can also be carried out using a mixture of the above solvents with a solvent which is not effective by itself (solvent of low polarity) but which is inexpensive. The yields achieved can exceed 90%.

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