H-phosphonate-mediated sulfonylation of heteroaromatic N-oxides: a mild and metal-free one-pot synthesis of 2-sulfonyl quinolines/pyridines

2015 ◽  
Vol 51 (60) ◽  
pp. 12111-12114 ◽  
Author(s):  
Kai Sun ◽  
Xiao-Lan Chen ◽  
Xu Li ◽  
Ling-Bo Qu ◽  
Wen-Zhu Bi ◽  
...  
Keyword(s):  
Room Temperature ◽  
One Pot ◽  
Metal Free ◽  
One Pot Synthesis ◽  
Synthetic Strategy

A smart H-phosphonate-mediated synthetic strategy for the sulfonylation of heteroaromatic N-oxides has been developed in one pot under metal-free conditions at room temperature.

One-pot synthesis of bio-based polycarbonates from dimethyl carbonate and isosorbide under metal-free condition

2020 ◽  
Vol 22 (14) ◽  
pp. 4550-4560
Author(s):  
Wenjuan Fang ◽  
Zhencai Zhang ◽  
Zifeng Yang ◽  
Yaqin Zhang ◽  
Fei Xu ◽  
...  
Keyword(s):  
Dimethyl Carbonate ◽  
One Pot ◽  
Free Condition ◽  
Metal Free ◽  
One Pot Synthesis ◽  
Synthetic Strategy

A synthetic strategy for bio-based polycarbonate was developed via one-pot polymerization of renewable monomer isosorbide and dimethyl carbonate using eco-friendly organo-catalysts.

scholarly journals Et3N/DMSO-supported one-pot synthesis of highly fluorescent β-carboline-linked benzothiophenones via sulfur insertion and estimation of the photophysical properties

2020 ◽  
Vol 16 ◽  
pp. 1740-1753 ◽  
Author(s):  
Dharmender Singh ◽  
Vipin Kumar ◽  
Virender Singh
Keyword(s):  
Transition Metal ◽  
Elemental Sulfur ◽  
Photophysical Properties ◽  
Quantum Yields ◽  
One Pot ◽  
Light Emitting ◽  
Metal Free ◽  
One Pot Synthesis ◽  
Synthetic Strategy ◽  
Reaction Proceeds

A robust transition-metal-free strategy is presented to access novel β-carboline-tethered benzothiophenone derivatives from 1(3)-formyl-β-carbolines using elemental sulfur activated by Et3N/DMSO. This expeditious catalyst-free reaction proceeds through the formation of β-carboline-based 2-nitrochalcones followed by an incorporation of sulfur to generate multifunctional β-carboline-linked benzothiophenones in good to excellent yields. The synthetic strategy could also be extended towards the synthesis of β-carboline-linked benzothiophenes. Moreover, the afforded products emerged as promising fluorophores and displayed excellent light-emitting properties with quantum yields (ΦF) up to 47%.

Aryne insertion into the PO bond: one-pot synthesis of quaternary phosphonium triflates

2019 ◽  
Vol 17 (26) ◽  
pp. 6450-6460 ◽  
Author(s):  
Kashmiri Neog ◽  
Dhiraj Dutta ◽  
Babulal Das ◽  
Pranjal Gogoi
Keyword(s):  
Transition Metal ◽  
Phosphine Oxide ◽  
Direct Synthesis ◽  
One Pot ◽  
Metal Free ◽  
One Pot Synthesis ◽  
Synthetic Strategy

A novel transition-metal free synthetic strategy for the direct synthesis of quaternary phosphonium triflates via insertion of aryne into phosphine oxide.

Visible-light-enabled aerobic synthesis of benzoin bis-ethers from alkynes and alcohols

2018 ◽  
Vol 20 (24) ◽  
pp. 5479-5483 ◽  
Author(s):  
Wen-Long Lei ◽  
Biao Yang ◽  
Qing-Bao Zhang ◽  
Pan-Feng Yuan ◽  
Li-Zhu Wu ◽  
...  
Keyword(s):  
Visible Light ◽  
Room Temperature ◽  
One Pot ◽  
Metal Free ◽  
One Pot Synthesis

The first visible-light enabled metal-free aerobic protocol for one-pot synthesis of benzoin bis-ethers from alkenes and alcohols has been developed at room temperature.

scholarly journals Transition metal-free one-pot synthesis of substituted pyrroles by employing aza-Wittig reaction

RSC Advances ◽  
2019 ◽  
Vol 9 (53) ◽  
pp. 30659-30665 ◽  
Author(s):  
Chetna Jadala ◽  
Budaganaboyina Prasad ◽  
A. V. G. Prasanthi ◽  
Nagula Shankaraiah ◽  
Ahmed Kamal
Keyword(s):  
Transition Metal ◽  
Wittig Reaction ◽  
One Pot ◽  
Metal Free ◽  
One Pot Synthesis ◽  
Synthetic Strategy ◽  
Substituted Pyrroles

A mild and metal-free one-pot synthetic strategy has been developed for the construction of substituted pyrroles by employing aza-Wittig reaction from a unique and unexplored combination of chromones and phenacyl azides.

scholarly journals Et3N-DMSO Supported One-pot Synthesis of Highly Fluorescent β-Carboline Linked Benzothiophenones via Sulphur Insertion and Estimation of Their Photophysical Properties

2020 ◽  
Author(s):  
Dharmender Singh ◽  
Vipin Kumar ◽  
Virender Singh
Keyword(s):  
Quantum Yield ◽  
Transition Metal ◽  
Photophysical Properties ◽  
Elemental Sulphur ◽  
One Pot ◽  
Light Emitting ◽  
Metal Free ◽  
One Pot Synthesis ◽  
Synthetic Strategy ◽  
Reaction Proceeds

A robust transition metal-free strategy is presented to access novel β-carboline tethered benzothiophenone derivatives from 1(3)-formyl-β-carbolines using elemental sulphur activated by Et3N/DMSO. This expeditious catalyst-free reaction proceeds through the formation of β-carboline based 2-nitrochalcones followed by incorporation of sulphur to generate the multifunctional β-carboline linked benzothiophenones in good to excellent yields. The synthetic strategy can also be extended towards the synthesis of β-carboline linked benzothiophenes. Moreover, the products as afforded thereof emerged as promising fluorophores and displayed excellent light-emitting properties with quantum yield (ΦF) upto 47%.

ChemInform Abstract: I2Promoted Domino Oxidative Cyclization for One-Pot Synthesis of 2-Acylbenzothiazoles via Metal-Free sp3C-H Functionalization.

ChemInform ◽  
2012 ◽  
Vol 43 (52) ◽  
pp. no-no
Author(s):  
Yan-Ping Zhu ◽  
Mi Lian ◽  
Feng-Cheng Jia ◽  
Mei-Cai Liu ◽  
Jing-Jing Yuan ◽  
...  
Keyword(s):  
Oxidative Cyclization ◽  
One Pot ◽  
Metal Free ◽  
One Pot Synthesis
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