n-butyllithium in diethyl ether; hexane n-BuLi (2.5 M in hexane) was dropped to Et2O soln. of F-compd. (-70 °C, 1 h stirring), mixt. was added to pre-cooled (-60 °C) soln. of 2.5 equiv. of B(OMe)3 in Et2O, stirring for 1 h at -60 °C, warming to 20 ° C within 1 h; hydrolysis with 10 percent HCl, org. layer was sepd., aq. layer was twice extd. with ether, extracts were combined, dried with MgSO4, evapd. under vac., solid was recrystd. from hot toluene, elem. anal.;

in methanol; water 33percent H2O in MeOH, 20 °C, several h; monitored by (19)F NMR;

pyridine in pyridine anhydrous pyridine, 20 °C, complete conversion was observed after6 h; monitored by (19)F NMR;