Transition-Metal-Free Decarboxylative Cyclization of N-Arylacrylamides with 2,2-Difluoro-2-(phenylthio)acetic Acid: Synthesis of Thiodifluorooxindole Derivatives

A transition-metal-free radical carbonylation of activated alkylamines with thiophenols has been successfully developed. Various thioesters were selectively produced with moderate to good yields.

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Regioselective C3-H Trifluoromethylation of 2H-Indazole Under Transition-Metal-Free Photoredox Catalysis

10.26434/chemrxiv.7796603.v1 ◽

2019 ◽

Cited By ~ 1

Author(s):

Arumugavel Murugan ◽

Venkata Nagarjuna Babu ◽

Nagaraj Sabarinathan ◽

Sharada Duddu. S

Keyword(s):

Transition Metal ◽

Visible Light ◽

Practical Approach ◽

Hypervalent Iodine ◽

Radical Mechanism ◽

Photoredox Catalysis ◽

Metal Free

Here we report a visible-light-promoted metal-free regioselective C3-H trifluoromehtylation reaction that proceeds via radical mechanism and which supported by control experiments. The combination of photoredox catalysis and hypervalent iodine reagent provides a practical approach for the present trifluoromethylation reaction and synthesis of a library of trifluoromethylated indazoles.

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Selective Oxidation of Alcohols Catalyzed by a Transition Metal-Free System of NHPI/DDQ/NaNO2

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION) ◽

10.3724/sp.j.1088.2011.00734 ◽

2011 ◽

Vol 32 (1) ◽

pp. 118-122 ◽

Cited By ~ 2

Author(s):

Lipeng ZHOU ◽

Chaofeng ZHANG ◽

Tao FANG ◽

Bingbing ZHANG ◽

Ying WANG ◽

...

Keyword(s):

Transition Metal ◽

Selective Oxidation ◽

Free System ◽

Metal Free ◽

Oxidation Of Alcohols

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Defect engineering and characterization of active sites for efficient electrocatalysis

Nanoscale ◽

10.1039/d0nr08976a ◽

2021 ◽

Vol 13 (6) ◽

pp. 3327-3345

Author(s):

Xuecheng Yan ◽

Linzhou Zhuang ◽

Zhonghua Zhu ◽

Xiangdong Yao

Keyword(s):

Transition Metal ◽

Active Sites ◽

Defect Engineering ◽

Metal Free

This review highlights recent advancements in defect engineering and characterization of both metal-free carbons and transition metal-based electrocatalysts.

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Transition metal free, green and facile halogenation of ketene dithioacetals using a KX–oxidant system

New Journal of Chemistry ◽

10.1039/d0nj03737k ◽

2021 ◽

Author(s):

Vishakha Rai ◽

Ganesh Shivayogappa Sorabad ◽

Mahagundappa Rachappa Maddani

Keyword(s):

Transition Metal ◽

Ambient Temperature ◽

Metal Free ◽

Ketene Dithioacetals ◽

System P ◽

Oxidative Halogenation ◽

Potassium Halide

A facile oxidative halogenation of α-oxo ketene dithioacetals is achieved by using a potassium halide and an oxidant combination under transition metal free conditions at ambient temperature.

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