scholarly journals Regioselective and Chemoselective Reduction of α,β-Unsaturated Carbonyl Compounds by NaBH4/Ba(OAc)2 as a Reducing System

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Mina Mohamadi ◽  
Davood Setamdideh ◽  
Behrooz Khezri
Keyword(s):  
Carbonyl Compounds ◽  
Room Temperature ◽  
Allylic Alcohols ◽  
Unsaturated Aldehydes ◽  
Aldehydes And Ketones

α,β-unsaturated aldehydes and ketones are regioselectively reduced to the corresponding allylic alcohols with NaBH4/Ba(OAc)2 system in CH3CN. This system is also efficient for the chemoselective reduction of enals in the presence of enones at room temperature.

NaBH4/NaHSO4·H2O a Heterogeneous Acidic System for a Mild and Convenient Reduction of Carbonyl Compounds under Protic Condition

2005 ◽  
Vol 60 (4) ◽  
pp. 453-457 ◽  
Author(s):  
Behzad Zeynizadeh ◽  
Tarifeh Behyar
Keyword(s):  
Carbonyl Compounds ◽  
Room Temperature ◽  
Reduction Reactions ◽  
Heterogeneous Condition ◽  
Unsaturated Aldehydes ◽  
Sodium Bisulfate ◽  
Aldehydes And Ketones ◽  
Acidic Reagent

NaBH4 in the presence of sodium bisulfate (NaHSO4·H2O), a weakly acidic reagent, efficiently reduces a variety of carbonyl compounds such as aldehydes, ketones, α,β -unsaturated aldehydes and ketones, α-diketones and acyloins to their corresponding alcohols in acetonitrile under heterogeneous condition. Reduction reactions were accomplished at room temperature or under reflux condition

New Zinc Catalyst for Hydrosilylation of Carbonyl Compounds

Synthesis ◽  
2019 ◽  
Vol 51 (17) ◽  
pp. 3305-3312 ◽  
Author(s):  
Iryna D. Alshakova ◽  
Georgii I. Nikonov
Keyword(s):  
Carbonyl Compounds ◽  
Zinc Complex ◽  
Allylic Alcohols ◽  
Reaction Conditions ◽  
Unsaturated Aldehydes ◽  
Substoichiometric Amount ◽  
Aldehydes And Ketones ◽  
Catalytic Hydrosilylation ◽  
Catalyst Load

A new zinc complex was synthesized and applied in the catalytic hydrosilylation of carbonyl compounds. Optimization of the reaction conditions showed that the presence a substoichiometric amount of methanol accelerates the process significantly. The reaction can proceed at very low catalyst load (down to 0.1 mol%) under mild reaction conditions. The reaction tolerates the presence of C=C bonds, and thus can be useful for the synthesis of allylic alcohols from α,β-unsaturated aldehydes and ketones.

Metal-catalysed selective transfer hydrogenation of α,β-unsaturated carbonyl compounds to allylic alcohols

2020 ◽  
Vol 22 (11) ◽  
pp. 3323-3357 ◽  
Author(s):  
Ronald A. Farrar-Tobar ◽  
Andrea Dell'Acqua ◽  
Sergey Tin ◽  
Johannes G. de Vries
Keyword(s):  
Carbonyl Compounds ◽  
State Of The Art ◽  
The State ◽  
Transfer Hydrogenation ◽  
Allylic Alcohols ◽  
Selective Transfer ◽  
Unsaturated Aldehydes ◽  
Aldehydes And Ketones ◽  
Metal Catalyzed

This review describes the state-of-the-art of metal-catalyzed selective transfer hydrogenation of α,β-unsaturated aldehydes and ketones to the allylic alcohols, covering the literature of the last 30 years.

scholarly journals Zn(BH4)2/Al2O3: A new synthetic method for efficient and convenient reduction of organic carbonyl compounds to their corresponding alcohols

2013 ◽  
Vol 78 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Davood Setamdideh ◽  
Behrooz Khezri ◽  
Mehdi Rahmatollahzadeh
Keyword(s):  
Carbonyl Compounds ◽  
Room Temperature ◽  
Allylic Alcohols ◽  
Synthetic Method ◽  
Reduction Reactions

Zn(BH4)2 (0.5-2 mmol) in the presence of Al2O3 (1 mmol) reduces varieties of organic carbonyl compounds such as aldehydes, ketones, acyloins, ?-diketones and ?, ?-unsaturated carbonyl compounds to their corresponding alcohols. Reduction reactions were carried out in THF at room temperature in high to excellent yields of products. The chemoselective reduction of aldehydes over ketones was accomplished successfully with this reducing system. In addition, regioselectivity and exclusive 1,2-reduction of conjugated carbonyl compounds to their corresponding allylic alcohols in high to excellent yields was accomplished successfully with this reducing system.

Recyclable Au0, Ag0 and Au0–Ag0 nanocolloids for the chemoselective hydrogenation of α,β-unsaturated aldehydes and ketones to allylic alcohols

2009 ◽  
Vol 355 (1-2) ◽  
pp. 176-183 ◽  
Author(s):  
Pascal G.N. Mertens ◽  
Pieter Vandezande ◽  
Xingpu Ye ◽  
Hilde Poelman ◽  
Ivo F.J. Vankelecom ◽  
...  
Keyword(s):  
Allylic Alcohols ◽  
Unsaturated Aldehydes ◽  
Chemoselective Hydrogenation ◽  
Aldehydes And Ketones
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