Reactions of a Neutral Silylene Ruthenium Complex with Heterocumulenes: CO Hydrosilylation of Isocyanates vs CS Bond Cleavage of Isothiocyanate
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Reactions of the neutral silylene ruthenium complex Cp*(CO)(H)RuSi(H){C(SiMe3)3} (2) with heterocumulenes were investigated. Treatment of 2 with ArNCO (Ar = Mes, Ph; Mes = 2,4,6-trimethylphenyl) resulted in hydrosilylation of ArNCO selectively at the CO bond at room temperature to give the five-membered chelate complexes Cp*(CO)Ru[κ2N,Si-N(Ar)C(H)OSi(H){C(SiMe3)3}] (3a, Ar = Mes; 3b, Ar = Ph). In contrast, the reaction of 2 with MesNCS led to cleavage of the CS double bond to give the isocyanide complex Cp*(CO)Ru(CNMes){SSiH2C(SiMe3)3} (4). The structures of both types of products were unambiguously determined by X-ray crystallography.
创建时间：
2016-02-22
