Patent ID: 7199252

Claim:
Process for the preparation of a compound having the formula: which comprises contacting a first olefin selected from 4-(alkenyl)ethylenecarbonates having the formula: and at least one olefin having the formula H 2 C═CHR 2 (V) or R 2 HC═CHR 2 (VI) or a cycloalkene (VII) in the presence of an olefin metathesis catalyst under olefin metathesis conditions of pressure and temperature wherein R 1 is hydrogen, a C 1 to C 10 , substituted or unsubstituted, straight or branched chain alkyl radical; a C 2 to C 10 , substituted or unsubstituted, straight or branched chain alkenyl radical; a C 3 to C 10 , substituted or unsubstituted cycloalkyl or cycloalkenyl radical; a C 6 to C 10 , substituted or unsubstituted aryl radical; or a C 4 to C 10 , substituted or unsubstituted heterocylic radical containing from 1 to 3 heteroatoms selected from oxygen and sulfur; R 2 each is C 1 to C 10 , substituted or unsubstituted, straight or branched chain alkyl radical; C 2 to C 10 , substituted or unsubstituted, straight or branched chain alkenyl radical; C 3 to C 10 , substituted or unsubstituted cycloalkyl or cycloalkenyl radical; C 6 to C 10 , substituted or unsubstituted aryl radical; or C 4 to C 10 , substituted or unsubstituted heterocylic radical containing from 1 to 3 heteroatoms selected from oxygen and sulfur; and cycloalkene (VII) is selected from the group consisting of substituted or unsubstituted cyclobutenes, cyclopentenes, cyclopentadienes, cyclohexenes, cycloheptenes, and cyclooctenes.