Multicomponent Cascade Reaction by Metal-Free Aerobic Oxidation for Synthesis of Highly Functionalized 2-Amino-4-coumarinyl-5-arylpyrroles

2019 ◽  
Vol 85 (2) ◽  
pp. 327-338 ◽  
Author(s):  
Quan-Xing Zi ◽  
Chang-Long Yang ◽  
Kun Li ◽  
Qin Luo ◽  
Jun Lin ◽  
...  
Keyword(s):  
Aerobic Oxidation ◽  
Cascade Reaction ◽  
Metal Free

A metal-free yne-addition/1,4-aryl migration/decarboxylation cascade reaction of alkynoates with Csp3–H centers

2016 ◽  
Vol 14 (7) ◽  
pp. 2210-2217 ◽  
Author(s):  
De-Long Kong ◽  
Liang Cheng ◽  
Hong-Ru Wu ◽  
Yang-Xiong Li ◽  
Dong Wang ◽  
...  
Keyword(s):  
Cascade Reaction ◽  
Single Site ◽  
Metal Free ◽  
Different Types

Reactions of alkynoates with different types of radical precursors under metal-free conditions affording single-site-addition poly-substituted alkenes were reported.

Metal-free visible-light-induced aerobic oxidation of α-diazoesters leading to α-ketoesters in air

2021 ◽  
Author(s):  
Ruisheng Liu ◽  
Qishun Liu ◽  
Haoran Meng ◽  
Hongyu Ding ◽  
Jindong Hao ◽  
...  
Keyword(s):  
Visible Light ◽  
Room Temperature ◽  
Aerobic Oxidation ◽  
Metal Free

A metal-free and visible-light-induced strategy has been established for the construction of α-ketoesters via aerobic oxidation of α-diazoesters with dioxygen in air at room temperature.

A metal-free radical cascade reaction of phosphine oxides with 2-aryloxy phenylacetylenes to assemble diphosphonyl xanthene derivatives

2021 ◽  
Author(s):  
Tao Fan ◽  
Yan Liu ◽  
Caina Jiang ◽  
Yanli Xu ◽  
Yan-Yan Chen
Keyword(s):  
Free Radical ◽  
Transition Metal ◽  
Cascade Reaction ◽  
Phosphine Oxides ◽  
Metal Free ◽  
Mild Conditions ◽  
Xanthene Derivatives ◽  
Reaction Proceeds ◽  
Radical Cascade

A radical cascade reaction of 2-aryloxy phenylacetylene with phosphine oxides promoted by K2S2O8 was developed, provided diphosphonyl xanthenes as products. This reaction proceeds under transition metal-free and mild conditions with...

Bifunctional metal-free photo-organocatalysts for enantioselective aerobic oxidation of β-dicarbonyl compounds

Tetrahedron ◽  
2018 ◽  
Vol 74 (27) ◽  
pp. 3624-3633 ◽  
Author(s):  
Xiao-fei Tang ◽  
Shi-hao Feng ◽  
Ya-kun Wang ◽  
Fan Yang ◽  
Ze-hao Zheng ◽  
...  
Keyword(s):  
Aerobic Oxidation ◽  
Dicarbonyl Compounds ◽  
Metal Free

A transition-metal-free multicomponent reaction towards constructing chiral 2H-1,4-benzoxazine scaffolds

2020 ◽  
Vol 22 (21) ◽  
pp. 7506-7512
Author(s):  
Lixiang Zhu ◽  
Xiaoyu Ren ◽  
Juan Du ◽  
Jia-Hong Wu ◽  
Jian-Ping Tan ◽  
...  
Keyword(s):  
Transition Metal ◽  
Multicomponent Reaction ◽  
Phosphonium Salt ◽  
Cascade Reaction ◽  
Metal Free

A transition-metal-free multicomponent cascade reaction of α-halogenated ketones, ortho-aminophenols, and aldehydes using a dipeptide phosphonium salt catalyst was developed for the construction of various 2H-1,4-benzoxazines.

De novo synthesis of benzofurans via trifluoroacetic acid catalyzed cyclization/oxidative aromatization cascade reaction of 2-hydroxy-1,4-diones

2019 ◽  
Vol 17 (32) ◽  
pp. 7547-7551 ◽  
Author(s):  
Qiang Sha ◽  
Haixuan Liu
Keyword(s):  
Trifluoroacetic Acid ◽  
De Novo ◽  
Cascade Reaction ◽  
De Novo Synthesis ◽  
Simple Metal ◽  
Metal Free ◽  
Aromatization Reaction ◽  
Oxidative Aromatization ◽  
Acid Catalyzed

A simple metal-free cyclization/oxidative aromatization reaction starting from 2-hydroxy-1,4-diones for the de novo synthesis of benzofurans was developed.

Combining Flavin Photocatalysis and Organocatalysis: Metal-Free Aerobic Oxidation of Unactivated Benzylic Substrates

2018 ◽  
Vol 21 (1) ◽  
pp. 114-119 ◽  
Author(s):  
Jan Zelenka ◽  
Eva Svobodová ◽  
Ján Tarábek ◽  
Irena Hoskovcová ◽  
Veronika Boguschová ◽  
...  
Keyword(s):  
Aerobic Oxidation ◽  
Metal Free
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