Synthesis of Aryltriethoxysilanes via Rhodium(I)‐Catalyzed Cross‐Coupling of Aryl Electrophiles with Triethoxysilane.

Abstract

Organo-silicon compounds S 0060 Synthesis of Aryltriethoxysilanes via Rhodium(I)-Catalyzed Cross-Coupling of Aryl Electrophiles with Triethoxysilane. -A wide variety of aryl iodides is silylated with HSi(OEt)3 in the presence of highly active Rh(I)-catalysts and NEt3 as base. The silylation of aryl bromides and aryl triflates requires the presence of Bu4NI. Under the present conditions, silanes (IVa)-(IVc) are less selective in the silylation reaction of 4-iodobenzoic ester (Ii), and halosilanes (IVd) and (IVe) fail to react. -(MURATA*, M.; YAMASAKI, H.; UETA, T.; NAGATA, M.; ISHIKURA, M.; WATANABE, S.; MASUDA, Y.; Tetrahedron 63 (2007) 19, 4087-4094; Dep. Mater. Sci., Kitami Inst. Technol., Koen, Kitami 090, Japan; Eng.) -Klein 33-156