Chemoselective Hydrogenation of Aldehydes under Mild, Base-Free Conditions: Manganese Outperforms Rhenium
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https://figshare.com/articles/dataset/Chemoselective_Hydrogenation_of_Aldehydes_under_Mild_Base-Free_Conditions_Manganese_Outperforms_Rhenium/6115331
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资源简介：
Several
hydride Mn(I) and Re(I) PNP pincer complexes were applied
as catalysts for the homogeneous chemoselective hydrogenation of aldehydes.
Among these, [Mn(PNP-iPr)(CO)2(H)] was
found to be one of the most efficient base metal catalysts for this
process and represents a rare example which permits the selective
hydrogenation of aldehydes in the presence of ketones and other reducible
functionalities, such as CC double bonds, esters, or nitriles.
The reaction proceeds at room temperature under base-free conditions
with catalyst loadings between 0.1 and 0.05 mol% and a hydrogen pressure
of 50 bar (reaching TONs of up to 2000). A mechanism which involves
an outer-sphere hydride transfer and reversible PNP ligand deprotonation/protonation
is proposed. Analogous isoelectronic and isostructural Re(I) complexes
were only poorly active.
创建时间：
2018-05-01
