NHC-Stabilized Silagermenylidene: A Heavier Analogue of Vinylidene
作者:Anukul Jana、Volker Huch、David Scheschkewitz
DOI:10.1002/anie.201306780
日期:2013.11.11
low‐valent Group 14 elements, namely silagermenylidene A, is achieved by reduction of Tip2SiCl2 and NHC⋅GeCl2 (Tip=2,4,6‐iPr3C6H2; NHC=1,3‐diisopropyl‐4,5‐dimethylimidazol‐2‐ylidene). The potential of A as a synthon is demonstrated by the formal [2+2] cycloaddition with phenylacetylene to afford NHC‐stabilized cyclic germylene B.
稳定亚乙烯基类似物:一种新的化合物类低原子价14族元素,即silagermenylidene的第一代表性的合成甲,通过还原提示的实现2的SiCl 2和NHC⋅GeCl 2(提示= 2,4,6- i Pr 3 C 6 H 2; NHC = 1,3-二异丙基-4,5-二甲基咪唑-2-亚基)。的电位甲作为合成子是由正式[2 + 2]环加成与苯基乙炔得到NHC稳定环状锗烯证明乙。
Air-Stable Tetrakis(2,4,6-triisopropylphenyl)disilene. Direct Synthesis of Disilene from Dihalomonosilane
The most air-stable disilene, tetrakis(2,4,6-triisopropylphenyl) disilene was obtained by the direct treatment of dichloromonosilane, bis(2,4,6-triisopropylphenyl)dichlorosilane, with lithium naphthalenide. The Si=Si bond, the distance being 2.144 Å via X-ray structure analysis, was found to be sterically covered with the four bulky substituents.