Iridium complex catalyzed germylative coupling reaction between alkynes and iodogermanes – a new route to alkynylgermanium and alkynylgermasilicon compounds
The new reaction of terminal alkynes with iodogermanes proceeding in the presence of an IrI-complex [Ir(μ-Cl)(CO)2}2] (I) and NEt(iPr)2, as a hydrogeniodideacceptor, leads to the formation of functionalized alkynylgermanes. This reaction occurs via direct activation of the Csp–H bond in the starting alkyne. Detailed stoichiometric experiments using [Ir(cod)(CCPh)(PCy3)] (IVa) and iodogermane were