Synthesis of vinyl carbonates for use in producing vinyl carbamates

Abstract

A method for making a vinyl carbonate represented by the formula (I): CH2═CHOC(O)X1R1  (I) wherein X1 is oxygen or sulfur and R1 is a substituted or an unsubstituted aliphatic alkyl, aryl, aryl alkyl, olefinic, vinyl, or cycloaliphatic group comprises: (a) reacting a compound represented by the formula (II): X2C(O)X1R1  (II) wherein X2 is a halogen other than fluorine, with a compound represented by the formula (III): M1—F  (III) wherein M1 is selected from a Group IA metal, in the presence of a first phase transfer catalyst and a first organic solvent, to form a compound represented by the formula (IV): FC(O)X1R1  (IV); and (b) reacting a compound represented by the formula (IV) with a compound represented by the formula (V): CH2═CHOSi(R2)3  (V) wherein R2 is a substituted or an unsubstituted aliphatic alkyl, aryl, aryl alkyl olefinic, vinyl, or cycloaliphatic group, or any combination thereof, in the presence of a metal salt represented by the formula M2—F wherein M2 is a Group IA metal, a second phase transfer catalyst, and a second organic solvent, to form the compound represented by formula (I).

Dependencies are inferred from the claim text.