scholarly journals Metal-free direct thiocarbamation of imidazopyridines with carbamoyl chloride and elemental sulfur

RSC Advances ◽  
2017 ◽  
Vol 7 (85) ◽  
pp. 54013-54016 ◽  
Author(s):  
Jian-Chao Deng ◽  
Shi-Bin Zhuang ◽  
Quan-Zhu Liu ◽  
Zi-Wei Lin ◽  
Yu-Liang Su ◽  
...  
Keyword(s):  
Elemental Sulfur ◽  
Metal Free

Metal-free direct thiocarbamation of imidazopyridines using elemental sulfur.

Metal-Free Dehydrogenative Double C–H Sulfuration To Access Thieno[2,3-b]indoles Using Elemental Sulfur

2019 ◽  
Vol 84 (20) ◽  
pp. 12946-12959 ◽  
Author(s):  
Jianming Liu ◽  
Yanyan Zhang ◽  
Yuanyuan Yue ◽  
Zhixian Wang ◽  
Huibin Shao ◽  
...  
Keyword(s):  
Elemental Sulfur ◽  
Metal Free

Synthesis of α-Keto Thioamides by Metal-Free C═C Bond Cleavage in Enaminones Using Elemental Sulfur

2018 ◽  
Vol 84 (2) ◽  
pp. 1064-1069 ◽  
Author(s):  
Lu Gan ◽  
Yong Gao ◽  
Li Wei ◽  
Jie-Ping Wan
Keyword(s):  
Elemental Sulfur ◽  
Bond Cleavage ◽  
Metal Free

Metal-Free Aminothiation of Alkynes: Three-Component Tandem Annulation toward Indolizine Thiones from 2-Alkylpyridines, Ynals, and Elemental Sulfur

2019 ◽  
Vol 84 (19) ◽  
pp. 12639-12647 ◽  
Author(s):  
Zhengwang Chen ◽  
Pei Liang ◽  
Fan Xu ◽  
Zhen Deng ◽  
Lipeng Long ◽  
...  
Keyword(s):  
Elemental Sulfur ◽  
Metal Free

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%.

Transition-Metal-Free Synthesis of 2-Substituted Benzothiazoles from Nitrobenzenes, Methylheteroaryl Compounds, and Elemental Sulfur, Based on Nitro-Methyl Redox-Neutral Cyclization

2020 ◽  
Vol 85 (23) ◽  
pp. 15213-15220
Author(s):  
Masahiro Teramoto ◽  
Mitsutaka Imoto ◽  
Motonori Takeda ◽  
Takumi Mizuno ◽  
Akihiro Nomoto ◽  
...  
Keyword(s):  
Transition Metal ◽  
Elemental Sulfur ◽  
Metal Free

Metal-free oxidative cyclization of 2-aminobenzothiazoles and cyclic ketones enabled by the combination of elemental sulfur and oxygen

2017 ◽  
Vol 19 (18) ◽  
pp. 4294-4298 ◽  
Author(s):  
Yanjun Xie ◽  
Xiangui Chen ◽  
Zhen Wang ◽  
Huawen Huang ◽  
Bing Yi ◽  
...  
Keyword(s):  
Elemental Sulfur ◽  
Oxidative Cyclization ◽  
Cyclic Ketones ◽  
Metal Free

Aerobic cyclization of 2-aminobenzothiazoles and cyclic ketones enabled by the combination of elemental sulfur and oxygen under metal-free conditions.

Reductive cleavage of the N–O bond: elemental sulfur-mediated conversion of N-alkoxyamides to amides

2019 ◽  
Vol 6 (3) ◽  
pp. 347-351 ◽  
Author(s):  
Senlin Wang ◽  
Xue Zhao ◽  
Daisy Zhang-Negrerie ◽  
Yunfei Du
Keyword(s):  
Elemental Sulfur ◽  
Reductive Cleavage ◽  
Metal Free

By treating with elemental sulfur in the presence of DABCO in DMSO, a variety of N-alkoxyamides were readily converted to amides in satisfactory to excellent yields via a metal-free reductive cleavage of the N–O bond.

One-Pot Synthesis of 5-Acyl-1,2,3-Thiadiazoles from Enaminones, Tosylhydrazine, and Elemental Sulfur under Transition-Metal-Free Conditions

2019 ◽  
Vol 84 (24) ◽  
pp. 16262-16267 ◽  
Author(s):  
Zan Yang ◽  
Yemei Liang ◽  
An Li ◽  
Kun Liu ◽  
Lijun Li ◽  
...  
Keyword(s):  
Transition Metal ◽  
Elemental Sulfur ◽  
One Pot ◽  
Metal Free ◽  
One Pot Synthesis
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