CF3Br

98

B-15 NUCLEOPHILICTRIFLUOROMETHYLATIONWITHTHEREAGENT COMBINATION(Et2N)3P/CF~Br IngoRuppert Anorganisch-Chemisches Institut derUniversittit Bonn,Gerhard-Domagk-Str. 1,5300 Bonn 1 (F.R.C.)

By interaction of the reagent combination aminophosphane 1 and bromotrifluoromethane 2 - on halides of the 4th-6th maingroup we found a new synthetic route to trifluoromethylated elementorganics.

(Et,$,P

+

B;,,

1

R,E-Cl

RI&:

f

((W)3P-$

.,,-)

(CH3)3Si,(CH3)3Ge9 PhiP,

Ph2As,

_(Et.$.+ PC,]+ B,- =

(C$)3Sn,

(CH3)zSb;

RnE-CF3

(CH3)sPb; PhSe

All CF3-products can be isolated in respectable yields by this simple

procedure.

In the meantime

our method

organyl

halides

thanes.

In this connexion

of a-fluorinated

inclusive

silanes

was extended

C6F5Br

and mixed

especially

to higher halo(F,

the synthesis

perfluore

Cl, Br)meof a palette

like

\ ISi-CF3

emphasizes

SSi-CFC12

the scope

and validity

SSi-CFZBr

of our three

component system.