Base- and metal-free decarboxylative aldol reaction of β-ketoacids with glyoxylate hydrates and glyoxal monohydrates in water

2016 ◽  
Vol 18 (24) ◽  
pp. 6609-6617 ◽  
Author(s):  
Nan Ren ◽  
Jing Nie ◽  
Jun-An Ma
Keyword(s):  
Aldol Reaction ◽  
Environmentally Benign ◽  
Metal Free

An environmentally benign decarboxylative aldol reaction of β-ketoacids with glyoxylate and glyoxal monohydrates in water is reported.

Electrochemical Oxidative Cyclization of Alkenes, Boronic Acids, and Dichalcogenides to Access Chalcogenated Boronic Esters and 1,3-Diols

2021 ◽  
Author(s):  
Changfeng Huang ◽  
Jijing Hu ◽  
Guangxian Chen ◽  
Minjian Wu ◽  
Hua Cao ◽  
...  
Keyword(s):  
Boronic Acids ◽  
Oxidative Cyclization ◽  
Environmentally Benign ◽  
Allylic Alcohols ◽  
Efficient Manner ◽  
Metal Free ◽  
Boronic Esters

A sustainable, environmentally benign electrochemical oxidative three-component cyclization of allylic alcohols, boronic acids, and dichalcogenides under metal-free and oxidant-free conditions has been developed, which provides an efficient manner for the...

scholarly journals Nitrosonium ion catalysis: aerobic, metal-free cross-dehydrogenative carbon–heteroatom bond formation

2018 ◽  
Vol 54 (92) ◽  
pp. 13022-13025 ◽  
Author(s):  
Luis Bering ◽  
Laura D’Ottavio ◽  
Giedre Sirvinskaite ◽  
Andrey P. Antonchick
Keyword(s):  
Bond Formation ◽  
Environmentally Benign ◽  
Reaction Conditions ◽  
Metal Free ◽  
Dehydrogenative Coupling ◽  
Nitrosonium Ion

Catalytic cross-dehydrogenative coupling of heteroarenes with thiophenols and phenothiazines has been developed under mild and environmentally benign reaction conditions.

scholarly journals Metal-free synthesis of phosphinoylchroman-4-ones via a radical phosphinoylation–cyclization cascade mediated by K2S2O8

2020 ◽  
Vol 16 ◽  
pp. 1974-1982
Author(s):  
Qiang Liu ◽  
Weibang Lu ◽  
Guanqun Xie ◽  
Xiaoxia Wang
Keyword(s):  
Phosphine Oxide ◽  
Environmentally Benign ◽  
Metal Free

A variety of chroman-4-ones bearing phosphine oxide motifs were conveniently synthesized from readily available diphenylphosphine oxides and alkenyl aldehydes via a metal-free tandem phosphinoylation/cyclization protocol. The reaction utilizes K2S2O8 as oxidant and proceeds in DMSO/H2O at environmentally benign conditions with a broad substrate scope and afforded the title compounds in moderate yields.

A practical protocol for the synthesis of bibenzyls via C(sp3)–H activation of methyl arenes under metal-free conditions

2017 ◽  
Vol 4 (1) ◽  
pp. 147-150 ◽  
Author(s):  
Promod Kumar ◽  
Tirumaleswararao Guntreddi ◽  
Rahul Singh ◽  
Krishna Nand Singh
Keyword(s):  
Environmentally Benign ◽  
Atom Economy ◽  
Metal Free

A variety of bibenzyl derivatives have been synthesized with excellent atom economy via C(sp3)–H–C(sp3)–H coupling of readily available methyl arenes using K2S2O8 under metal-free and environmentally benign conditions.

N-Heterocyclic carbene-catalyzed synthesis of functionalized 3-hydroxypyrrolidinones via a domino aza-Michael/aldol reaction

2015 ◽  
Vol 39 (7) ◽  
pp. 5104-5107 ◽  
Author(s):  
Yan-fang Zhu ◽  
Chun Cai
Keyword(s):  
Transition Metal ◽  
Simple Procedure ◽  
Aldol Reaction ◽  
Reaction Conditions ◽  
Metal Free

The reaction features a transition-metal-free approach, mild reaction conditions, as well as a simple procedure.

Transition-metal-free and organic solvent-free conversion of N-substituted 2-aminobiaryls into corresponding carbazoles via intramolecular oxidative radical cyclization induced by peroxodisulfate

2017 ◽  
Vol 19 (24) ◽  
pp. 5854-5861 ◽  
Author(s):  
Palani Natarajan ◽  
Priya Priya ◽  
Deachen Chuskit
Keyword(s):  
Transition Metal ◽  
Organic Solvent ◽  
Radical Cyclization ◽  
Solvent Free ◽  
Environmentally Benign ◽  
Metal Free ◽  
Benign Synthesis ◽  
Oxidative Radical Cyclization

An atom-economical and environmentally benign synthesis of N-substituted carbazoles is described. This methodology afforded products in 90–120 minutes.

scholarly journals Metal-free oxidative coupling of arylmethylamines with indoles: a simple, environmentally benign approach for the synthesis of 3,3′-bis(indolyl)methanes

RSC Advances ◽  
2020 ◽  
Vol 10 (39) ◽  
pp. 23254-23262
Author(s):  
Vikas D. Kadu ◽  
Sankala Naga Chandrudu ◽  
Mahesh G. Hublikar ◽  
Dattatraya G. Raut ◽  
Raghunath B. Bhosale
Keyword(s):  
Molecular Oxygen ◽  
Oxidative Coupling ◽  
Environmentally Benign ◽  
Metal Free

The efficient metal-free oxidative coupling of arylmethylamines with indoles has been developed using molecular oxygen as a green oxidant towards a novel rout of 3,3′-bis(indolyl)methanes (BIMs) synthesis.

scholarly journals Environmentally Benign Metal-Free Reduction of GO Using Molecular Hydrogen: A Mechanistic Insight

ACS Omega ◽  
2018 ◽  
Vol 3 (11) ◽  
pp. 15112-15118
Author(s):  
Ritu Rai ◽  
Zubair Ahmed ◽  
Rajinder Kumar ◽  
Rameshwar L. Kumawat ◽  
Kalyani Chordiya ◽  
...  
Keyword(s):  
Molecular Hydrogen ◽  
Environmentally Benign ◽  
Metal Free ◽  
Mechanistic Insight
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