Electrochemical synthesis of sulfonated benzothiophenes using 2-alkynylthioanisoles and sodium sulfinates

2021 ◽  
Author(s):  
Mingming Zhang ◽  
Yu Sun ◽  
Wan-Wan Wang ◽  
Kang-Kang Chen ◽  
Wen-Chao Yang ◽  
...  
Keyword(s):  
Electrochemical Synthesis ◽  
Metal Free ◽  
Good Substrate ◽  
Efficient Access

An electrochemical sulfonlylation/cyclization of 2-alkynylthioanisoles with sodium sulfinates was developed under catalyst-, external oxidant- and metal-free conditions. The electrosynthesis provides sustainable and efficient access to 3-sulfonated benzothiophenes with good substrate...

scholarly journals Metal‐free Electrochemical Synthesis of Sulfonamides Directly from (Hetero)arenes, SO2 and Amines

2020 ◽  
Author(s):  
Stephan P. Blum ◽  
Tarik Karakaya ◽  
Dieter Schollmeyer ◽  
Siegfried R Waldvogel ◽  
Artis Klapars
Keyword(s):  
Electrochemical Synthesis ◽  
Metal Free

Electrochemical Synthesis of Quinazolinones by the Metal-Free and Acceptor-Free Dehydrogenation of 2-Aminobenzamides

Synlett ◽  
2020 ◽  
Vol 31 (18) ◽  
pp. 1795-1799
Author(s):  
Qing-Hu Teng ◽  
Yan-Yan Chen ◽  
Yan Yao ◽  
Xiu-Jin Meng
Keyword(s):  
Electrochemical Synthesis ◽  
Metal Free ◽  
Efficient Approach

An efficient approach has been developed for the construction of quinazolin-4(3H)-ones by the selective anodic dehydrogenative oxidation/cyclization of benzylic chlorides and 2-aminobenzamides. The method features acceptor-free and metal-free dehydrogenation of amines to imines; a subsequent intermolecular addition provides the products in moderate to good yields.

scholarly journals Metal-free site-selective C–H cyanoalkylation of 8-aminoquinoline and aniline-derived amides with azobisisobutyronitrile

RSC Advances ◽  
2021 ◽  
Vol 11 (49) ◽  
pp. 30719-30724
Author(s):  
Mengfei Zhao ◽  
Zengxin Qin ◽  
Kaixin Zhang ◽  
Jizhen Li
Keyword(s):  
Metal Free ◽  
Good Substrate ◽  
Substrate Tolerance ◽  
Site Selective

An efficient metal-free cyanoalkylation of 8-aminoquinoline and aniline-derived amides was achieved in the presence of K2S2O8. The method showed good substrate tolerance and also suitable for bromination and dimerization reactions.

Metal-free radical cascade dichloromethylation of activated alkenes using CH2Cl2: highly selective activation of the C–H bond

RSC Advances ◽  
2014 ◽  
Vol 4 (110) ◽  
pp. 64855-64859 ◽  
Author(s):  
Yunfei Tian ◽  
Zhong-Quan Liu
Keyword(s):  
Free Radical ◽  
Dicumyl Peroxide ◽  
Cascade Process ◽  
Selective Activation ◽  
Metal Free ◽  
Efficient Access ◽  
Radical Cascade

A dicumyl peroxide-initiated highly selective activation of the (sp3)C–H bond in dichloromethane (DCM, CH2Cl2) has been achieved, which allows efficient access to dichloronated oxindoles via a free-radical cascade process.

DDQ-mediated regioselective C–S bond formation: efficient access to allylic sulfides

2018 ◽  
Vol 5 (21) ◽  
pp. 3158-3162 ◽  
Author(s):  
Chunsheng Li ◽  
Jianxiao Li ◽  
Chaowei Tan ◽  
Wanqing Wu ◽  
Huanfeng Jiang
Keyword(s):  
Bond Formation ◽  
Metal Free ◽  
Efficient Access

A novel metal-free dehydrocoupling approach for constructing allylic sulfides via oxidative allylic C–H functionalization with high atom- and step-economy has been developed.

S-Doped three-dimensional graphene (S-3DG): a metal-free electrocatalyst for the electrochemical synthesis of ammonia under ambient conditions

2020 ◽  
Vol 49 (7) ◽  
pp. 2258-2263 ◽  
Author(s):  
Jin Wang ◽  
Shuang Wang ◽  
Jinping Li
Keyword(s):  
Electrochemical Synthesis ◽  
Three Dimensional ◽  
Ambient Conditions ◽  
3D Graphene ◽  
Metal Free ◽  
Electrochemical Synthesis Of Ammonia

3D-graphene provide abundant space for N2, and the carbon–sulfur bonds provides a continuous supply of electrons for N2 reduction. A remarkably large NH3 yield of 38.81 μgNH3 mgcat−1 h−1 and FE of 7.72% for N2 reduction was obtained.

Newly developed electrochemical synthesis of Co-based layered double hydroxides: toward noble metal-free electro-catalysis

2019 ◽  
Vol 7 (18) ◽  
pp. 11241-11249 ◽  
Author(s):  
Elisa Musella ◽  
Isacco Gualandi ◽  
Erika Scavetta ◽  
Arianna Rivalta ◽  
Elisabetta Venuti ◽  
...  
Keyword(s):  
Noble Metal ◽  
Layered Double Hydroxides ◽  
Electrochemical Synthesis ◽  
Metal Free ◽  
Electro Catalysis ◽  
Catalytic Applications ◽  
Double Hydroxides

A novel and reproducible protocol allows the electro-synthesis of LDHs for electro-catalytic applications.

Electrochemical synthesis of enaminones via a decarboxylative coupling reaction

2019 ◽  
Vol 21 (14) ◽  
pp. 3796-3801 ◽  
Author(s):  
Xianqiang Kong ◽  
Yulong Liu ◽  
Long Lin ◽  
Qianjin Chen ◽  
Bo Xu
Keyword(s):  
Electrochemical Synthesis ◽  
Coupling Reaction ◽  
Metal Free ◽  
Redox Catalyst ◽  
Decarboxylative Coupling

Metal-free and oxidant-free n-Bu4NI as a redox catalyst and electrolyte.

Transition-Metal-Free, Intermolecular Azidoheteroarylation of Alkenes: Efficient Access to β-Azidoalkylated Quinoxalinones and Preliminary Antifungal Evaluation Against Magnaporthe grisea

Synthesis ◽  
2020 ◽  
Vol 52 (16) ◽  
pp. 2395-2409
Author(s):  
Weiwei Qin ◽  
Zhaodong Li ◽  
Yiming Du ◽  
Yue Chen ◽  
Yun-Lin Liu
Keyword(s):  
Transition Metal ◽  
Magnaporthe Grisea ◽  
Single Step ◽  
Domino Reaction ◽  
Efficient Synthesis ◽  
Metal Free ◽  
Efficient Access ◽  
First Time ◽  
Antibacterial Evaluation ◽  
Addition Pathway

An efficient, PhI(OAc)2-mediated, radical azidoheteroarylation of alkenes under transition-metal-free conditions is reported by employing TMSN3 and quinoxalin-2(1H)-ones as coupling partners. This domino reaction allows an efficient synthesis of valuable orangoazides containing quinoxalin-2(1H)-one derivatives and could be extended to phosphinyl-alkylated quinoxalin-2(1H)-one in a single step in moderate to excellent yields under mild conditions, as demonstrated by the preliminary antibacterial evaluation against Magnaporthe grisea for the first time. Mechanistic studies revealed that this transformation undergoes a cascade addition pathway controlled by a polar radical.

Visible-light-induced dual C–C bond formation via selective C(sp3)–H bond cleavage: efficient access to alkylated oxindoles from activated alkenes and simple ethers under metal-free conditions

2017 ◽  
Vol 19 (7) ◽  
pp. 1732-1739 ◽  
Author(s):  
Dong Xia ◽  
Yang Li ◽  
Tao Miao ◽  
Pinhua Li ◽  
Lei Wang
Keyword(s):  
Visible Light ◽  
Bond Cleavage ◽  
Bond Formation ◽  
Metal Free ◽  
Efficient Access ◽  
Oxidative Difunctionalization

A visible-light-induced oxidative difunctionalization of activated alkenes with simple ethersviaselective C(sp3)–H bond cleavage and dual C–C bond formation was developed.

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