Metal-free Uncatalyzed Reduction ofα,β-Unsaturated Ketones Mediated by Hantzsch 1,4-Dihydropyridine

2008 ◽  
Vol 26 (4) ◽  
pp. 599-601 ◽  
Author(s):  
Hua-Jian XU ◽  
You-Cheng LIU ◽  
Yao FU
Keyword(s):  
Unsaturated Ketones ◽  
Metal Free

Synthesis of Asymmetrical 2,6-Diarylpyridines from Linear α,β,γ,δ-Unsaturated Ketones by Addition of Ammonium Formate Followed by Annulation

Synthesis ◽  
2019 ◽  
Vol 51 (20) ◽  
pp. 3875-3882
Author(s):  
Yejun Gao ◽  
Rener Chen ◽  
Yongmin Ma
Keyword(s):  
Efficient Method ◽  
Ammonium Formate ◽  
Unsaturated Ketones ◽  
Metal Free ◽  
Air Atmosphere

A simple and efficient method has been established for the synthesis of asymmetrical 2,6-diarylpyridines by cyclization of α,β,γ,δ-unsaturated ketones with ammonium formate under air atmosphere. The reaction is metal-free and operationally convenient from readily available starting materials. Thirty-three examples have been presented, most of which show good yields.

scholarly journals Chemoselective and metal-free reduction of α,β-unsaturated ketones by in situ produced benzeneselenol from O-(tert-butyl) Se-phenyl selenocarbonate

RSC Advances ◽  
2020 ◽  
Vol 10 (56) ◽  
pp. 33706-33717
Author(s):  
Andrea Temperini ◽  
Marco Ballarotto ◽  
Carlo Siciliano
Keyword(s):  
Double Bond ◽  
Hydrochloric Acid ◽  
Unsaturated Ketones ◽  
Metal Free ◽  
Tert Butyl ◽  
Carbon Double Bond

The carbon–carbon double bond of arylidene acetones and chalcones can be selectively reduced with benzeneselenol generated in situ by reacting O-(tert-butyl) Se-phenyl selenocarbonate with hydrochloric acid in ethanol.

Metal-free base-promoted sulfenylation for the synthesis of α - arylthio- α,β -unsaturated ketones

Tetrahedron ◽  
2018 ◽  
Vol 74 (5) ◽  
pp. 585-593 ◽  
Author(s):  
Xiao-Tong Zhu ◽  
Qi Zhao ◽  
Shi-Da Wang ◽  
Tian-Shu Zhang ◽  
Pei-Jun Cai ◽  
...  
Keyword(s):  
Free Base ◽  
Unsaturated Ketones ◽  
Metal Free

ChemInform Abstract: Transition-Metal-Free Superbase-Promoted Stereoselective α-Vinylation of Ketones with Arylacetylenes: A General Strategy for Synthesis of β,γ-Unsaturated Ketones.

ChemInform ◽  
2012 ◽  
Vol 43 (52) ◽  
pp. no-no
Author(s):  
Boris A. Trofimov ◽  
Elena Yu. Schmidt ◽  
Nadezhda V. Zorina ◽  
Elena V. Ivanova ◽  
Igor A. Ushakov
Keyword(s):  
Transition Metal ◽  
General Strategy ◽  
Unsaturated Ketones ◽  
Metal Free

Mild, Efficient and Metal‐Free Strategies for Direct Diamination of α, β‐Unsaturated Ketones Using Different Iodine Sources

2021 ◽  
Vol 6 (19) ◽  
pp. 4684-4688
Author(s):  
Subhankar Sarkar ◽  
Rana Chatterjee ◽  
Satyajit Pal ◽  
Adinath Majee
Keyword(s):  
Unsaturated Ketones ◽  
Metal Free
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