Phenyl isocyanate → 12,12-difluoro-11-dodecenyl N-phenylcarbamate

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of 2.0 grams (0.0091 mole) of 12,12-difluoro-11-dodecen-1-ol (prepared in Example 5) in 15 ml of heptane was added two drops of dibutyltin diacetate, and then 1.2 grams (0.0100 mole) of phenyl isocyanate was added dropwise. Upon completion of addition, the reaction mixture was warmed to 80° C. where it stirred for 30 minutes. The reaction mixture was allowed to cool to ambient temperature where it stirred for 18 hours. After this time the reaction mixture was cooled in a freezer, and a precipitate was collected by filtration. The filter cake was washed with cold pentane and dried yielding 2.47 grams of 12,12-difluoro-11-dodecenyl N-phenylcarbamate; m.p. 54°-56° C. The nmr spectrum was consistent with the proposed structure.

Provenance & Evidence