Synthesis of a base-stabilized silicon(I)-iron(II) complex for hydroboration of carbonyl compounds

Synthesis of a base-stabilized silicon(I)-iron(II) complex for hydroboration of carbonyl compounds

The reaction of the amidinatosilicon(I) dimer [LSi:]2 (1; L = PhC(N tBu)2) with FeBr2 in tetrahydrofuran (THF) at ambient temperature afforded the silicon(I)-iron(II) dimer [LSi(FeBr2·THF)]2 (2) after 40 h. Compound 2 can catalyze hydroboration of aliphatic and aromatic ketone compounds with HBpin i...

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Bibliographic Details
Main Authors: Khoo, Sabrina, Cao, Jiajia, Ng, Fiona, So, Cheuk-Wai
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2020
Subjects:
Science::Chemistry
Iron
Ketones
Online Access:https://hdl.handle.net/10356/136861
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Institution: Nanyang Technological University
Language: English
Description
Summary:The reaction of the amidinatosilicon(I) dimer [LSi:]2 (1; L = PhC(N tBu)2) with FeBr2 in tetrahydrofuran (THF) at ambient temperature afforded the silicon(I)-iron(II) dimer [LSi(FeBr2·THF)]2 (2) after 40 h. Compound 2 can catalyze hydroboration of aliphatic and aromatic ketone compounds with HBpin in the absence of any strong reducing agent. Mechanistic studies show that complex 2 reacts with ketone compounds to form a zwitterionic intermediate in the first step of catalysis. Subsequent reaction with HBpin affords the corresponding boron esters and then regenerates complex 2.

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