Metal catalyst-free photo-induced alkyl C–O bond borylation

2020 ◽  
Vol 56 (70) ◽  
pp. 10219-10222 ◽  
Author(s):  
Guobin Ma ◽  
Changzhou Chen ◽  
Sangita Talukdar ◽  
Xinluo Zhao ◽  
Chuanhu Lei ◽  
...  
Keyword(s):  
Visible Light ◽  
Metal Catalyst ◽  
Catalyst Free ◽  
Tertiary Alkyl

Tertiary alkyl boronates were prepared via the C–O bond borylation of the corresponding oxalates under catalyst-free/(DMF)2–B2cat2 initiated visible light-induced conditions.

scholarly journals Straightforward synthesis of quinazolin-4(3H)-ones via visible light-induced condensation cyclization

RSC Advances ◽  
2022 ◽  
Vol 12 (3) ◽  
pp. 1494-1498
Author(s):  
Wuji Sun ◽  
Xue Ma ◽  
Yuqi Pang ◽  
Lifeng Zhao ◽  
Qidi Zhong ◽  
...  
Keyword(s):  
Energy Source ◽  
Visible Light ◽  
Functional Group ◽  
Clean Energy ◽  
Metal Catalyst ◽  
Catalyst Free ◽  
Clean Energy Source

Visible light was used as a readily available and renewable clean energy source for the green and metal catalyst free synthesis of quinazolin-4(3H)-ones. High and excellent yields of the desired products were obtained with good functional group tolerance.

Visible-light activated metal catalyst-free vicinal diazidation of olefins with sulfonium iodate(i) species

2019 ◽  
Vol 55 (19) ◽  
pp. 2833-2836 ◽  
Author(s):  
Thurpu Raghavender Reddy ◽  
Dodla Sivanageswara Rao ◽  
Sudhir Kashyap
Keyword(s):  
Visible Light ◽  
Late Stage ◽  
Metal Catalyst ◽  
Radical Process ◽  
Biologically Relevant ◽  
Catalyst Free

An unprecedented visible-light inspired selective radical azidation of unactivated and diverse substituted vinylarenes with sulfonium iodate reagent has been realized. The intrinsic radical process triggered by light tolerated several synthetically useful functionalities enabling two new carbon-hetero bonds which display distinctive late-stage applications to biologically relevant scaffolds.

Visible Light and Hydroxynaphthylbenzimidazoline Promoted Transition-Metal-Catalyst-Free Desulfonylation of N-Sulfonylamides and N-Sulfonylamines

2018 ◽  
Vol 83 (18) ◽  
pp. 10813-10825 ◽  
Author(s):  
Eietsu Hasegawa ◽  
Yuto Nagakura ◽  
Norihiro Izumiya ◽  
Keisuke Matsumoto ◽  
Tsukasa Tanaka ◽  
...  
Keyword(s):  
Transition Metal ◽  
Visible Light ◽  
Metal Catalyst ◽  
Transition Metal Catalyst ◽  
Catalyst Free

Visible‐Light Induced C( sp 3 )−H Functionalization for the Formation of C−N Bonds under Metal Catalyst‐Free Conditions

2020 ◽  
Vol 362 (14) ◽  
pp. 2770-2777 ◽  
Author(s):  
Jin‐Yang Chen ◽  
Wenfeng Wu ◽  
Qiang Li ◽  
Wen‐Ting Wei
Keyword(s):  
Visible Light ◽  
Metal Catalyst ◽  
Catalyst Free

scholarly journals Synthetic strategies for aryl/heterocyclic selenides and tellurides under transition-metal-catalyst free conditions

RSC Advances ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 6682-6698
Author(s):  
Debasish Kundu
Keyword(s):  
Transition Metal ◽  
Visible Light ◽  
Ball Milling ◽  
Microwave Heating ◽  
Metal Catalyst ◽  
Visible Light Photocatalysis ◽  
Transition Metal Catalyst ◽  
Catalyst Free

Synthesis of aryl and heteroaryl selenides and tellurides are summerized under transition free sustainable conditions by using greener reagents and techniques such as ball milling, microwave heating, ultrasound, visible light photocatalysis etc.

scholarly journals Radical difluoromethylthiolation of aromatics enabled by visible light

2018 ◽  
Vol 9 (26) ◽  
pp. 5781-5786 ◽  
Author(s):  
Jianbin Li ◽  
Dianhu Zhu ◽  
Leiyang Lv ◽  
Chao-Jun Li
Keyword(s):  
Visible Light ◽  
Broad Spectrum ◽  
Noble Metals ◽  
Metal Catalyst ◽  
Stoichiometric Amount ◽  
Catalyst Free ◽  
Shelf Stable

A metal-catalyst-free and redox-neutral innate difluoromethylthiolation method enabled by visible light is described. This protocol employs a shelf-stable and readily available electrophilic difluoromethylthiolating reagent, PhSO2SCF2H, and converts a broad spectrum of arenes and heteroarenes to difluoromethylthioethers without noble metals and stoichiometric amount of additives.

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.

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).

scholarly journals The Application of Nafion Metal Catalyst Free Carbon Nanotube Modified Gold Electrode: Voltammetric Zinc Detection in Serum

2013 ◽  
pp. n/a-n/a ◽  
Author(s):  
Wei Yue ◽  
Adam Bange ◽  
Bill L. Riehl ◽  
Jay M. Johnson ◽  
Ian Papautsky ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Gold Electrode ◽  
Free Carbon ◽  
Metal Catalyst ◽  
Catalyst Free ◽  
Zinc Detection
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