scholarly journals Copper-catalyzed tandem reaction of 2-alkynylanilines with benzoquinones: efficient access to 3-indolylquinones

RSC Advances ◽  
2018 ◽  
Vol 8 (39) ◽  
pp. 22122-22126 ◽  
Author(s):  
Raveendra Jillella ◽  
Chang Ho Oh
Keyword(s):  
Efficient Method ◽  
Bond Formation ◽  
Tandem Reaction ◽  
Efficient Access

Copper-catalyzed domino cyclization of 2-alkynylanilines followed by C–C bond formation with quinones is an efficient method of accessing 3-indolyl quinones.

Electrochemical Oxidative Esterification of Thiophenols: Efficient Access to Sulfinic Esters

2020 ◽  
Vol 17 (7) ◽  
pp. 540-547
Author(s):  
Chun-Hui Yang ◽  
Cheng Wu ◽  
Jun-Ming Zhang ◽  
Xiang-Zhang Tao ◽  
Jun Xu ◽  
...  
Keyword(s):  
Organic Synthesis ◽  
Efficient Method ◽  
High Efficiency ◽  
Building Blocks ◽  
Constant Current ◽  
Good Efficiency ◽  
Oxidative Esterification ◽  
Efficient Access ◽  
New Applications ◽  
Sulfinic Esters

Background: The sulfinic esters are important and useful building blocks in organic synthesis. Objective: The aim of this study was to develop a simple and efficient method for the synthesis of sulfinic esters. Materials and Methods: Constant current electrolysis from thiols and alcohols was selected as the method for the synthesis of sulfinic esters. Results and Discussion: A novel electrochemical method for the synthesis of sulfinic esters from thiophenols and alcohols has been developed. Up to 27 examples of sulfinic esters have been synthesized using the current methods. This protocol shows good functional group tolerance as well as high efficiency. In addition, this protocol can be easily scaled up with good efficiency. Notably, heterocycle-containing substrates, including pyridine, thiophene, and benzothiazole, gave the desired products in good yields. A plausible reaction mechanism is proposed. Conclusion: This research not only provides a green and efficient method for the synthesis of sulfinic esters but also shows new applications of electrochemistry in organic synthesis. It is considered that this green and efficient synthetic protocol used to prepare sulfinic esters will have good applications in the future.

DDQ-mediated regioselective C–S bond formation: efficient access to allylic sulfides

2018 ◽  
Vol 5 (21) ◽  
pp. 3158-3162 ◽  
Author(s):  
Chunsheng Li ◽  
Jianxiao Li ◽  
Chaowei Tan ◽  
Wanqing Wu ◽  
Huanfeng Jiang
Keyword(s):  
Bond Formation ◽  
Metal Free ◽  
Efficient Access

A novel metal-free dehydrocoupling approach for constructing allylic sulfides via oxidative allylic C–H functionalization with high atom- and step-economy has been developed.

scholarly journals Alcohol-Initiated Dediazoniation of Aryldiazonium Ions to Aryl Radicals: A Simple and Efficient Route to Arylboronates

2018 ◽  
Vol 42 (9) ◽  
pp. 481-485
Author(s):  
Xiulian Zhang ◽  
Zhicheng Zhang ◽  
Yongbin Xie ◽  
Yujie Jiang ◽  
Ruibo Xu ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Bond Formation ◽  
Single Electron ◽  
Single Electron Transfer ◽  
Aryl Radical ◽  
Radical Species ◽  
Aryl Radicals ◽  
Efficient Access ◽  
Efficient Route ◽  
Operational Simplicity

A simple and efficient access to arylboronates was achieved with methanol-initiated borylation of aryldiazonium salts. Reduction of aryldiazonium ions by single electron transfer from methanol affords aryl radical species, which undergo a subsequent C–B bond formation with bis(pinacolato)diboron. This highly practical borylation process, which can be carried out on the gram-scale, enjoys operational simplicity as well as mild and catalyst-free conditions.

ChemInform Abstract: C(sp3)-P versus C(sp2)-P Bond Formation: Catalyst-Controlled Highly Regioselective Tandem Reaction of Ene-Yne-Ketones with H-Phosphonates.

ChemInform ◽  
2016 ◽  
Vol 47 (26) ◽  
Author(s):  
Yue Yu ◽  
Songjian Yi ◽  
Chuanle Zhu ◽  
Weigao Hu ◽  
Bingjie Gao ◽  
...  
Keyword(s):  
Bond Formation ◽  
Tandem Reaction

Metal-free, radical 1,6-conjugated addition of cyclic ethers with para-quinone methides (p-QMs)

2019 ◽  
Vol 17 (12) ◽  
pp. 3239-3248 ◽  
Author(s):  
Satish G. More ◽  
Gurunath Suryavanshi
Keyword(s):  
Free Radical ◽  
Efficient Method ◽  
Bond Formation ◽  
Cyclic Ethers ◽  
Quinone Methides ◽  
Metal Free

An efficient method for metal-free C–C bond formation between p-quinone methides (p-QMs) and cyclic ethers via a radical pathway to afford substituted diarylmethanes and triarylmethanes or to effect the α-alkylation of the cyclic ethers has been developed.

ChemInform Abstract: A New Efficient Method for S-CH2-S Bond Formation and Its Application to a Djenkolic Acid-Containing Cyclic Enkephalin Analogue.

ChemInform ◽  
2010 ◽  
Vol 30 (34) ◽  
pp. no-no
Author(s):  
Masaaki Ueki ◽  
Takayoshi Ikeo ◽  
Kumiko Hokari ◽  
Keiko Nakamura ◽  
Akihiko Saeki ◽  
...  
Keyword(s):  
Efficient Method ◽  
Bond Formation ◽  
Djenkolic Acid
Sign in / Sign up

Export Citation Format

Share Document