Synthesis of Cationic Silaamidinate Germylenes and Stannylenes and the Catalytic Application for Hydroboration of Pyridines
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https://figshare.com/articles/dataset/Synthesis_of_Cationic_Silaamidinate_Germylenes_and_Stannylenes_and_the_Catalytic_Application_for_Hydroboration_of_Pyridines/16601516
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资源简介：
The N-heterocyclic germylenes and
stannylenes LSi(NAr)2EX (L = PhC(NtBu)2, Ar = 2,6-iPr2C6H3; E = Ge, Sn; X
= Cl, CF3SO3, BPh4) supported by
the bulky silaamidinate ligand [LSi(NAr)2]− have been synthesized and fully characterized. The germylene triflate
LSi(NAr)2GeOTf (3b) and dimeric borate [LSi(NAr)2Ge]2ClBPh4 (3a) enabled
highly regio- and chemoselective catalytic hydroboration of pyridines
and may represent the most active catalytic system for the transformation.
DFT calculations disclosed that the cationic germylene [LSi(NAr)2Ge]+ with a low-lying LUMO energy initiated the
catalytic process. In contrast, the analogous amidinate germylene
triflates are almost inactive, indicating the silaamidinate ligand
is essential for the stabilization of cationic species.
创建时间：
2021-09-10
