Patent ID: 7105714

Claim:
A method of preparing an olefin compound of the formula R 4 R 5 C═CR 7 H or R 4 R 5 C═CR 7 R 8 , which method comprises ball-milling a phosphorus ylide of the formula R 1 R 2 R 3 P═CR 4 R 5 with a compound of the formula R 7 C(O)H or R 7 C(O)R 8 ; wherein R 1-3 are independently selected from the group consisting of hydrogen, C 1-25 alkyl, C 3-8 cycloalkyl, aralkyl, and aryl; wherein R 4 and R 5 are independently selected from the group consisting of hydrogen, C 1-25 alkyl, C 3-8 cycloalkyl, aralkyl, and aryl; wherein R 7 and R 8 are independently selected from the group consisting of C 1-25 alkyl, C 3-8 cycloalkyl, aralkyl, or aryl; and wherein the method optionally takes place in one reaction vessel.