Transition-metal free synthesis of N-Aryl carbazoles and their extended analogs

2021 ◽  
Author(s):  
Mikhail Feofanov ◽  
Vladimir Akhmetov ◽  
Ryo Takayama ◽  
Konstantin Amsharov
Keyword(s):  
Transition Metal ◽  
Facile Synthesis ◽  
Nucleophilic Substitutions ◽  
Metal Free ◽  
Electronic Transfer

Herein, we describe a facile synthesis of the N-arylated carbazoles via ladderization of fluorinated oligophenylenes. The reaction consists of two subsequent nucleophilic substitutions triggered by the electronic transfer from dimsyl...

Transition-metal-free and facile synthesis of 3-alkynylpyrrole-2, 4-dicarboxylates from methylene isocyanides and propiolaldehyde

2021 ◽  
Author(s):  
Xiaoli Huo ◽  
Xiaojuan Chen ◽  
Liya Yu ◽  
Chong Zhang ◽  
Linghui Zeng ◽  
...  
Keyword(s):  
Transition Metal ◽  
Efficient Method ◽  
Transformation Process ◽  
Facile Synthesis ◽  
Direct Transformation ◽  
Metal Free

A transition-metal-free, facile and efficient method for the synthesis of 3-alkynylpyrrole-2, 4-dicarboxylates from methylene isocyanides and propiolaldehyde with moderate to good yields has been developed. The direct transformation process and...

Facile synthesis of 4-quinolone derivatives via one-pot cascade reaction under transition-metal-free conditions

2015 ◽  
Vol 56 (24) ◽  
pp. 3777-3781 ◽  
Author(s):  
Chao Huang ◽  
Jia-Hui Guo ◽  
Huang-Mei Fu ◽  
Ming-Long Yuan ◽  
Li-Juan Yang
Keyword(s):  
Transition Metal ◽  
Cascade Reaction ◽  
Facile Synthesis ◽  
One Pot ◽  
Metal Free ◽  
Quinolone Derivatives

scholarly journals The involvement of the trisulfur radical anion in electron-catalyzed sulfur insertion reactions: facile synthesis of benzothiazine derivatives under transition metal-free conditions

2016 ◽  
Vol 7 (7) ◽  
pp. 4067-4072 ◽  
Author(s):  
Zheng-Yang Gu ◽  
Jia-Jia Cao ◽  
Shun-Yi Wang ◽  
Shun-Jun Ji
Keyword(s):  
Transition Metal ◽  
Radical Anion ◽  
Insertion Reaction ◽  
Insertion Reactions ◽  
Facile Synthesis ◽  
Metal Free ◽  
Practical Synthesis

An efficient and practical synthesis of benzothiazine by K2S initiated sulfur insertion reaction with enaminones via electron catalysis is developed.

Transition-Metal-Free Homocoupling of 1-Haloalkynes: A Facile Synthesis of Symmetrical 1,3-Diynes

2010 ◽  
Vol 75 (19) ◽  
pp. 6700-6703 ◽  
Author(s):  
Zhengwang Chen ◽  
Huanfeng Jiang ◽  
Azhong Wang ◽  
Shaorong Yang
Keyword(s):  
Transition Metal ◽  
Facile Synthesis ◽  
Metal Free

A metal-free method for facile synthesis of indanones via intramolecular hydroacylation of 2-vinylbenzaldehydes

2021 ◽  
Author(s):  
Guoxue He ◽  
Jinyu Ma ◽  
Jianhui Zhou ◽  
Chunpu Li ◽  
Hong Liu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Environmentally Benign ◽  
Facile Synthesis ◽  
Metal Free ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

A facile method access to indanones was developed under metal- and additive-free conditions in which L-proline served as efficient and environmentally benign catalysts. Compared with previous indanones synthesis by transition-metal-catalyzed...

Efficient synthesis of 1,2-benzisothiazoles from o-haloarylamidines and elemental sulfur via N–S/C–S bond formation under transition-metal-free conditions

2018 ◽  
Vol 20 (4) ◽  
pp. 827-831 ◽  
Author(s):  
Hao Xie ◽  
Guozheng Li ◽  
Feng Zhang ◽  
Fuhong Xiao ◽  
Guo-Jun Deng
Keyword(s):  
Transition Metal ◽  
Functional Groups ◽  
Elemental Sulfur ◽  
Bond Formation ◽  
Efficient Synthesis ◽  
Facile Synthesis ◽  
Good Tolerance ◽  
Metal Free

Facile synthesis of 1,2-benzisothiazoles from amidines and elemental sulfur via N–S/C–S bond formation under transition-metal-free conditions has been developed with good tolerance of a broad range of functional groups.

Facile Synthesis of Thienoacenes via Transition-Metal-Free Ladderization

2021 ◽  
Author(s):  
Mikhail Feofanov ◽  
Vladimir Akhmetov ◽  
Ryo Takayama ◽  
Konstantin Yu Amsharov
Keyword(s):  
Transition Metal ◽  
Facile Synthesis ◽  
Metal Free

TBHP/n-Bu4PBr-Promoted Oxidative Cross-Dehydrogenative Coupling of Aryl Methanols: A Facile Synthesis of Symmetrical Carboxylic Anhydride Derivatives

Synlett ◽  
2017 ◽  
Vol 29 (01) ◽  
pp. 136-140
Author(s):  
Mehdi Adib ◽  
Rahim Pashazadeh
Keyword(s):  
Transition Metal ◽  
Coupling Reaction ◽  
Catalytic Amount ◽  
Facile Synthesis ◽  
Butyl Hydroperoxide ◽  
Metal Free ◽  
Tert Butyl ◽  
Dehydrogenative Coupling ◽  
Tert Butyl Hydroperoxide ◽  
Methylene Groups

A transition-metal-free oxidative cross-dehydrogenative coupling reaction has been developed for the preparation of symmetrical carboxylic anhydrides through self-coupling dual C–O bond formations of aryl methanols. In the presence of a catalytic amount of tetrabutylphosphonium bromide (TBPB) as transfer agent and aqueous tert-butyl hydroperoxide (TBHP) as oxidant and reactant, methylene groups of aryl methanols were efficiently oxidized to C=O and coupled with the peroxide oxygen from TBHP to form a diverse array of symmetrical carboxylic anhydride derivatives.

Facile Synthesis of Sulfonyl Amidines and β-Amino Sulfonyl Enamines under Transition-Metal-Free Conditions

Synlett ◽  
2011 ◽  
Vol 2011 (09) ◽  
pp. 1281-1284 ◽  
Author(s):  
Baohua Chen ◽  
Tingting Gao ◽  
Mingming Zhao ◽  
Xu Meng ◽  
Chuanbin Li
Keyword(s):  
Transition Metal ◽  
Facile Synthesis ◽  
Metal Free
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