SYNTHESIS AND CHARACTERIZATION OF ARYL(TRIFLUOROMETHYL)BISMUTH COMPOUNDS (R-C6H4)(3-N)BI(CF3)(N) [R=H, 4-CH3, 4-CF3, 3-F, 4-F N=1 AND 2] AND THE REACTIONS OF (C6H5)(3-N)BI(CF3)(N) [N=0-3] WITH BENZOYLPYRIDINIUM CHLORIDE
Nv. Kirij et al., SYNTHESIS AND CHARACTERIZATION OF ARYL(TRIFLUOROMETHYL)BISMUTH COMPOUNDS (R-C6H4)(3-N)BI(CF3)(N) [R=H, 4-CH3, 4-CF3, 3-F, 4-F N=1 AND 2] AND THE REACTIONS OF (C6H5)(3-N)BI(CF3)(N) [N=0-3] WITH BENZOYLPYRIDINIUM CHLORIDE, Journal of fluorine chemistry, 69(3), 1994, pp. 219-223
The partly new derivatives (R-C6H4)BiBr2 and (R-C6H4)(2)BiCl (R=4-CH3,
4-CF3, 3-F, 4-F) have been prepared from the redistribution reactions
of the corresponding triarylbismuth compounds with BiBr3 and BiCl3, r
espectively. Metathesis reactions of these substrates with Cd(CF3)(2)
complexes yielded the new aryl(trifluoromethyl)bismuth compounds (R-C6
H4)(3-n)Bi(CF3)(n) (n=1 and 2). The mono(trifluoromethyl) derivatives
are quite stable towards dismutations, whereas the bis(trifluoromethyl
) compounds rapidly redistribute to give (R-C6H4)(2)Bi(CF3) and Bi(CF3
)(3). Comparative reactions of (C6H5)(3-n)Bi(CF3)(n) with benzoylpyrid
inium chloride showed that the mixed derivatives preferentially transf
er the phenyl group to yield benzophenone. Reactions of R(3)Bi with be
nzoylpyridinium chloride selectively give the corresponding phenone in
good yield.