Direct Access to α-Acyloxycarbonyl Compounds and Esters via Oxidative Esterification of Aldehydes under Visible Light

2021 ◽  
Author(s):  
Anindita Bhowmick ◽  
Prakash K Warghude ◽  
Pankaj D Dharpure ◽  
Ramakrishna G. Bhat
Keyword(s):  
Visible Light ◽  
Benzyl Bromide ◽  
Direct Access ◽  
Efficient Synthesis ◽  
Oxidative Esterification

Herein we report the efficient synthesis of α-acyloxycarbonyl compounds and esters starting directly from aldehydes and α-bromocarbonyl compounds/benzyl bromide derivatives and bromo nitriles using an organic photocatalyst in combination with...

Enhancement of visible-light-driven photoresponse of Mn-doped SnO 2 quantum dots obtained by rapid and energy efficient synthesis

2018 ◽  
Vol 195 ◽  
pp. 283-289 ◽  
Author(s):  
B. Babu ◽  
A.N. Kadam ◽  
G. Thirumala Rao ◽  
Sang-Wha Lee ◽  
Chan Byon ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Energy Efficient ◽  
Efficient Synthesis ◽  
Visible Light Driven ◽  
Mn Doped

Direct Access to α‐Aminosilanes Enabled by Visible‐Light‐Mediated Multicomponent Radical Cross‐Coupling

2021 ◽  
Author(s):  
Xiaoye Yu ◽  
Constantin Gabriel Daniliuc ◽  
Fatmah Ali Alasmary ◽  
Armido Studer
Keyword(s):  
Visible Light ◽  
Cross Coupling ◽  
Direct Access

scholarly journals Synthesis of (Z)-Cinnamate Derivatives via Visible-Light-Driven E-to-Z Isomerization

SynOpen ◽  
2019 ◽  
Vol 03 (04) ◽  
pp. 103-107 ◽  
Author(s):  
Penghua Shu ◽  
Haichang Xu ◽  
Lingxiang Zhang ◽  
Junping Li ◽  
Hao Liu ◽  
...  
Keyword(s):  
Visible Light ◽  
Organic Synthesis ◽  
Blue Light ◽  
Large Scale ◽  
Practical Approach ◽  
Efficient Synthesis ◽  
Synthetic Methodology ◽  
Visible Light Driven ◽  
Large Scale Synthesis

(Z)-Cinnamate derivatives are prevalent in natural bioactive products and in organic synthesis. Herein, we report a practical approach toward the efficient synthesis of (Z)-cinnamate derivatives via visible-light-driven isomerization. When E-isomers of cinnamate derivatives were irradiated with blue light in the presence of 1 mol% Ir2(ppy)4Cl2 (ppy = 2-phenylpyridine), Z-isomers were readily obtained in good yields. This strategy allows the large-scale synthesis of (Z)-cinnamate derivatives with simple purification. This convenient, mild, and green synthetic methodology was subsequently applied to the synthesis of coumarins.

Visible-Light Photoredox-Catalyzed Cascade Reaction for the Synthesis of Pyrrolo[2,1-a]isoquinoline-Substituted Phosphonates

Synthesis ◽  
2018 ◽  
Vol 51 (02) ◽  
pp. 522-529 ◽  
Author(s):  
Deqing Shi ◽  
Lingna Wang ◽  
Tiancong Ma ◽  
Mingming Qiao ◽  
Qiangxian Wu ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Room Temperature ◽  
Cascade Reaction ◽  
Efficient Synthesis ◽  
Reaction Conditions ◽  
One Pot ◽  
Oxidative Aromatization ◽  
Activated Olefins ◽  
Catalyzed Oxidation

A visible-light photoredox-catalyzed oxidation/[3+2] cycloaddition/oxidative aromatization cascade reaction of [(3,4-dihydroisoquinolin-2(1H)-yl)methyl]phosphonates and activated olefins or alkynes for the efficient synthesis of potentially biological active pyrrolo[2,1-a]isoquinoline-substituted phosphonates was developed. This transformation features mild reaction conditions (i.e., visible light irradiation, room temperature), molecular oxygen (O2) as a green oxidant, simple ‘one-pot’ operation.

Brønsted acid cocatalysis in photocatalytic intramolecular coupling of tertiary amines: efficient synthesis of 2-arylindols

2016 ◽  
Vol 14 (31) ◽  
pp. 7447-7450 ◽  
Author(s):  
Xiaoqian Yuan ◽  
Xinxin Wu ◽  
Shupeng Dong ◽  
Guibing Wu ◽  
Jinxing Ye
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Room Temperature ◽  
Coupling Reaction ◽  
Bronsted Acid ◽  
Tertiary Amines ◽  
Brønsted Acid ◽  
Efficient Synthesis ◽  
Unsaturated Ketones ◽  
Brönsted Acid

We report herein a highly efficient intramolecular coupling reaction of tertiary amines and ketones (α,β-unsaturated ketones) by using a Brønsted acid as a cocatalyst, affording 2-arylindols in good to excellent yields (up to 92%) under visible light irradiation at room temperature.

ChemInform Abstract: Aerobic Oxidative Esterification of Benzyl Alcohols with Catalytic Tetrabromomethane under Visible Light Irradiation.

ChemInform ◽  
2013 ◽  
Vol 44 (2) ◽  
pp. no-no
Author(s):  
Tomoya Nobuta ◽  
Akitoshi Fujiy ◽  
Shin-ichi Hirashima ◽  
Norihiro Tada ◽  
Tsuyoshi Miura ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Benzyl Alcohols ◽  
Oxidative Esterification
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