Catalytic tri-functionalisation of phenylsilane

Abstract

In one-pot catalytic reactions phenylsilane was converted to dithiolato ethers ( V–XIV) via hydrosilylation and SiS bond-forming reactions by RhCI(PPh 3) 3. The reaction of phenyl acetylene, phenylsilane and ArSH (Ar = Ph, o-tolyl, p-tolyl) in 1 : 1 : 2 ratio in the presence of RhCI(PPh 3) 3 (l mole%) gave RCH 2CH 2Si(SAr) 2 and ethylbenzene as a side product. Similar RhCI(PPh 3) 3 catalysed reactions of RC≡CH, PhSi 3, ArSH (Ar = phenyl, p-tolyl, o-tolyl) (1 : 1 : 2 ratio) gave RCHCHSi(SAr) 2 in excellent yields ( > 80%).