反应详情

An alternate synthesis of the vinylic fluorinated variant of 3,4-cyclopropyl-heptadecanoic acid can be achieved from the ketone compound described above (FIG. 12). A modified version of the mechanism is from Burton and Greenlimb 1975. J. Org. Chem. 40: 2796-2801; and in Schlosser and Zimmermann 1969. Synthesis 1: 75-76. Fluoromethyltriphenylphosphonium iodide was synthesized in a round-bottomed flask fitted with a water-cooled reflux condenser. The flask was charged with triphenylphosphine and fluoroiodomethane in dry benzene. The resulting solution was refluxed for 64 hr with moderate stirring. Upon completion of the reaction, the white insoluble phosphonium salt was collected on a glass funnel, washed with hot benzene, and dried in a vacuum dessicator for 12 hr.

1. customSynthesis 1: 75-76
2. temperaturecooled
3. temperaturereflux condenser
4. temperatureThe resulting solution was refluxed for 64 hr with moderate stirring
5. customUpon completion of the reaction
6. customthe white insoluble phosphonium salt was collected on a glass funnel
7. washwashed with hot benzene
8. customdried in a vacuum dessicator for 12 hr