Abstract
Peripherally functionalized low-valent main group species allow for the introduction/interconversion of functional groups without increasing the formal oxidation state of the main group center. Herein, we report a straightforward method for the incorporation of a α-chlorosilyl moiety adjacent to the NHC-coordinated germanium(II) center.
Highlights
In recent years, the chemistry of the heavier analogues of carbenes has been expanded beyond mere synthetic curiosity [1,2,3] towards application in synthesis
NHCor 1,4-dioxane coordinated dichlorogermylene has been reportedhas by germylene and NHCor 1,4-dioxane coordinated dichlorogermylene been reported by the groups of we report the synthesis of the of Baines report of NHC-stabilized beengroups reported by the and groups of Baines andHerein, Tobitahwe
[26] as as itit is is well well known known for for the the oxidative oxidative addition addition of of the the NHC- germanium(II)dichloride adduct 3 [26] as it is well known for the oxidative addition of different types of bonds e.g., C–Cl
Summary
The chemistry of the heavier analogues of carbenes (tetrylenes) has been expanded beyond mere synthetic curiosity [1,2,3] towards application in synthesis. As the complexity of the tetrylenes increases with more intricate ligand architectures [9], functionalization protocols in the presence of uncompromised low-valent Group. While the interconversion of functional groups is just beginning to emerge in the case of heavier multiple bonds [10], numerous examples have been reported for the heavier tetrylenes [11,12,13,14,15]. Scheschkewitz et al have taken a similar approach with the synthesis of the multiply functional NHC-coordinated silagermenylidenes, I and II (Scheme 1) [16,17], which serve as precursors for cyclic NHC-coordinated germylenes of type III, IV, and V under consumption of the Si=Ge bond, but retention of the low-valent germanium center (Scheme 1) [16,18,19]. The wesynthesis report the synthesis of NHC-stabilized (chlorosilyl)chlorogermylene, NHC-stabilized (chlorosilyl)chlorogermylene,
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