Hydrogen transfer reactions. I. Reduction of carbonyl compounds by alcohols catalyzed by alumina

1969 ◽  
Vol 47 (19) ◽  
pp. 3705-3707 ◽  
Author(s):  
D. V. Ramana ◽  
C. N. Pillai
Keyword(s):  
Vapor Phase ◽  
Carbonyl Compounds ◽  
Hydrogen Transfer ◽  
Isopropyl Alcohol ◽  
Aromatic Aldehydes ◽  
Transfer Reactions ◽  
Secondary Alcohols ◽  
Effective Catalyst ◽  
Phase Reduction ◽  
Aldehydes And Ketones

Alumina containing about 2.2% by weight of Na+ has been found to be an effective catalyst for the vapor phase reduction of carbonyl compounds by alcohols and for the reverse reaction, the oxidation of the alcohols by carbonyl compounds. The reduction of a number of aliphatic and aromatic aldehydes and ketones by isopropyl alcohol and the oxidation of a number of primary and secondary alcohols by ketones like acetone and cyclohexanone are reported.

Vapor-Phase Reduction of Aldehydes and Ketones with 2-Propanol over Hydrous Zirconium Oxide

1988 ◽  
Vol 17 (10) ◽  
pp. 1633-1636 ◽  
Author(s):  
Makoto Shibagaki ◽  
Kyoko Takahashi ◽  
Hideyuki Kuno ◽  
Hiroshi Kawakami ◽  
Hajime Matsushita
Keyword(s):  
Vapor Phase ◽  
Zirconium Oxide ◽  
Hydrous Zirconium Oxide ◽  
Phase Reduction ◽  
Aldehydes And Ketones ◽  
Hydrous Zirconium

Decarboxylative Umpolung Synthesis of Amines from Carbonyl Compounds

Synlett ◽  
2020 ◽  
Vol 31 (16) ◽  
pp. 1543-1550
Author(s):  
Baoguo Zhao ◽  
Wen-Wen Chen
Keyword(s):  
Carbonyl Compounds ◽  
Aromatic Aldehydes ◽  
High Reactivity ◽  
Mild Conditions ◽  
Intramolecular Reaction ◽  
Unsaturated Aldehydes ◽  
Recent Advances ◽  
Intermolecular Reaction ◽  
Aldehydes And Ketones

2-Azaallyl anions are valuable intermediates which have versatile applications in functionalization with various electrophiles. Decarboxylation of the imines formed from aromatic aldehydes and α,α-diphenylglycine provides an interesting and efficient way to generate delocalized 2-azaallyl anions, which display high reactivity toward different electrophiles with excellent regioselectivity at the diphenylketimino aryl carbon of the 2-azaallyl anions. The transformation produces various amines in good yields under very mild conditions. This Synpacts article highlights the recent advances on the decarboxylative umpolung synthesis of amines from carbonyl compounds.1 Introduction2 Decarboxylative Umpolung Reactions of Carbonyl Compounds with Different Electrophiles2.1 Reaction with π-Allyl–Pd(II) Species2.2 Reaction with Morita–Baylis–Hillman Adducts2.3 Reaction with Imines2.3.1 Intermolecular Reaction with N-Ts Imines2.3.2 Intramolecular Reaction with Chiral N-tert-Butanesulfinyl Imines2.4 Reaction with Aldehydes and Ketones3 Decarboxylative Umpolung Reaction of α,β-Unsaturated Aldehydes with Aldehydes4 Conclusion

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