Visible-light photoredox-mediated oxidation of N-methyl tertiaryamines under catalyst free conditions: Direct synthesis of methylene-bridged bis-1,3-dicarbonyl compounds

2014 ◽  
Vol 25 (4) ◽  
pp. 545-548 ◽  
Author(s):  
Xiao-Jun Dai ◽  
Xiao-Liang Xu ◽  
Dong-Ping Cheng ◽  
Xiao-Nian Li
Keyword(s):  
Visible Light ◽  
Direct Synthesis ◽  
Dicarbonyl Compounds ◽  
Catalyst Free ◽  
Mediated Oxidation

Visible-light-initiated Catalyst-free Oxidative Cleavage of Triaryl-Substituted Alkenes C=C Bonds under Ambient Conditions

2021 ◽  
Author(s):  
Wenjing Li ◽  
Shun Li ◽  
Lihua Luo ◽  
Yichen Ge ◽  
Jiaqi Xu ◽  
...  
Keyword(s):  
Visible Light ◽  
Room Temperature ◽  
Ambient Air ◽  
Oxidative Cleavage ◽  
Ambient Conditions ◽  
Blue Led ◽  
Catalyst Free

The catalyst-free oxidative cleavage of (Z)-triaryl-substituted alkenes bearing pyridyl motif with ambient air under irradiation of blue LED at room temperature has been developed. The reaction was facile and scalable,...

scholarly journals Mizoroki–Heck type reactions and synthesis of 1,4-dicarbonyl compounds by heterogeneous organic semiconductor photocatalysis

2021 ◽  
Vol 23 (5) ◽  
pp. 2017-2024
Author(s):  
Jagadish Khamrai ◽  
Saikat Das ◽  
Aleksandr Savateev ◽  
Markus Antonietti ◽  
Burkhard König
Keyword(s):  
Visible Light ◽  
Vinyl Acetate ◽  
Organic Semiconductor ◽  
Alkyl Halides ◽  
Visible Light Photocatalysis ◽  
Dicarbonyl Compounds ◽  
Semiconductor Photocatalysis ◽  
Type Coupling ◽  
Styrene Derivatives ◽  
Tertiary Alkyl

We report the synthesis of 1,4-dicarbonyl compounds and substituted alkenes (Mizoroki–Heck type coupling) starting from secondary and tertiary alkyl halides and vinyl acetate or styrene derivatives using visible-light photocatalysis.

Indirect, catalyst free β-Arylation of acyclic 1,5-dicarbonyl compounds via green method

2021 ◽  
pp. 100692
Author(s):  
Parashuram Gudimani ◽  
Samundeeswari. L. Shastri ◽  
Varsha Pawar ◽  
Lokesh A. Shastri ◽  
Vinay A. Sungar
Keyword(s):  
Green Method ◽  
Dicarbonyl Compounds ◽  
Catalyst Free

Catalyst-Free [2,3]-Sigmatropic Rearrangement Reactions of Photochemically Generated Ammonium Ylides

Synthesis ◽  
2019 ◽  
Vol 51 (23) ◽  
pp. 4348-4358 ◽  
Author(s):  
Fang Li ◽  
Feifei He ◽  
Rene M. Koenigs
Keyword(s):  
Visible Light ◽  
Sigmatropic Rearrangement ◽  
Tertiary Amines ◽  
Amino Esters ◽  
Catalyst Free ◽  
Rearrangement Reaction ◽  
Rearrangement Reactions ◽  
Free Ammonium

The rearrangement reaction of ammonium ylides furnishes valuable α,α-disubstituted amino esters. In this work, we describe the visible-light photolysis reaction of aryldiazoacetates in the presence of tertiary amines that react via a free ammonium ylide in a sigmatropic rearrangement reaction to provide amino esters in moderate to very good yields (33 examples, up to 97% yield).

Direct Synthesis of α-Keto Esters from Ethylbenzenes Using 48% Aqueous HBr by Aerobic Visible Light Photooxidation

Synlett ◽  
2011 ◽  
Vol 2011 (10) ◽  
pp. 1381-1384 ◽  
Author(s):  
Akichika Itoh ◽  
Norihiro Tada ◽  
Kazunori Ban ◽  
Tomoya Nobuta ◽  
Shin-ichi Hirashima ◽  
...  
Keyword(s):  
Visible Light ◽  
Direct Synthesis ◽  
Keto Esters
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