Patent ID: 7420097

Claim:
A method of making a compound, the method comprising: contacting in a nonprotic solvent: a ketone having a formula of O═CR 1 CH 2 R 2 ; and a cyclopentadienyl compound comprising Mg(C 5 R 3 4 H)X; followed by a proton source; to form a compound having a formula of C 4 R 3 4 C═CR 1 CH 2 R 2 and a structure: or an isomer thereof; wherein R 1 is an aryl or substituted aryl group having up to about 20 carbon atoms; R 2 is a hydrocarbyl or substituted hydrocarbyl group having from 1 to about 20 carbon atoms, or hydrogen; R 3 , in each instance, is independently selected from a hydrocarbyl or substituted hydrocarbyl group having from 1 to about 20 carbon atoms, or hydrogen; and X is Cl, Br, or I.