(TRIFLUOROMETHYL)GERMANES. PREPARATION AND PROPERTIES OF (CF3)2GeHX (X = H, D, F, Cl, Br, I, CH3) AND CF3GeHnX3-n (X = H, D, CF2H, CH3)

Article abstract of DOI:10.1016/0022-328X(86)84031-1

The hydrogenation of (CF3)_nGeX_4-n (X = halogen, n = 1-3) with NaBH4 in an acidic medium has been investigated.Deuteration with NaBD4 and D3PO4 gave the partially deuterated species CF3GeH_nD_3-n and (CF3)2GeH_nD_2-n in reasonable isotopic purity.The )CF3)2GeHBr was isolated and converted into the halides (CF3)2GeHX (X = F, Cl, I) by treatment with AgX or HX.Insertion of CF2 into a Ge-H bond has been observed, and (CF3)(CF2H)GeH2 has been characterized.Direct alkylation of Ge-H bonds brought about by reaction with a mixture of RI and R'2Zn (R, R' = CH3, C2H5), and the methyl(trifluoromethyl)germanes CF3GeH2(CH3), CF3GeH(CH3) and (CF3)2GeH(CH3) were isolated.For R = CD3, R' = CH3 the product distribution can be accounted in terms of two competing mechanisms.