Deoxygenation of Nitrous Oxide and Nitro Compounds Using Bis(N-Heterocyclic Silylene)Amido Iron Complexes as Catalysts.

doi:10.1002/anie.202114598

Paper

Deoxygenation of Nitrous Oxide and Nitro Compounds Using Bis(N-Heterocyclic Silylene)Amido Iron Complexes as Catalysts.

Published Nov 11, 2021 · Xi Chen, Hao Wang, Shaozhi Du

Angewandte Chemie

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Abstract

Herein, we report the efficient degradation of N2O with a well-defined bis(silylene)amido iron complex as catalyst. The deoxygenation of N2O using the iron silanone complex ( 4 ) as a catalyst and pinacolborane (HBpin) as a sacrificial reagent proceeds smoothly at 50 ⁰C to form N2 , H2, and (pinB)2O. Mechanistic studies suggest that the iron-silicon cooperativity is the key to this catalytic transformation, which involves N2O activation, H atom transfer, H2 release and oxygenation of the boron sites. This approach has been further developed to enable catalytic reductions of nitro compounds, producing amino-boranes with good functional-group tolerance and excellent chemoselectivity.

Study Snapshot

Bis(silylene)amido iron complexes efficiently deoxygenate N2O and nitro compounds, producing amino-boranes with good functional-group tolerance and excellent chemoselectivity.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

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Paper

Deoxygenation of Nitrous Oxide and Nitro Compounds Using Bis(N-Heterocyclic Silylene)Amido Iron Complexes as Catalysts.

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References

Citations

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Aluminylene-silylene cooperation enables facile cleavage of N-O bonds in nitrosoarenes, leading to aluminum imide complexes and silylalanes, and promoting reductive coupling of nitrosoarenes to azoxyarenes.

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Dinuclear cobalt silylene complexes, particularly complex 1, show excellent catalytic activity for alkene hydrosilylation reactions, with a cobalt hydride complex as an active intermediate.

Heavier tetrylene- and tetrylyne-transition metal chemistry: it's no carbon copy

Heavier tetrylene- and tetrylyne-transition metal chemistry has evolved from 19th-century discoveries to modern applications in cooperative bond activation and catalysis.

Nitrous oxide as diazo transfer reagent

Nitrous oxide can be efficiently used as a diazo transfer reagent, enabling the synthesization of triazenes, N-heterocycles, and azo- or diazo compounds.

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The iron(salen) complex can effectively reduce nitro compounds at room temperature, preserving carbonyl functionality and enabling hydroamination.

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