Efficient access to a designed phosphapalladacycle catalyst via enantioselective catalytic asymmetric hydrophosphination

2017 ◽  
Vol 46 (4) ◽  
pp. 1311-1316 ◽  
Author(s):  
Xi-Rui Li ◽  
Xiang-Yuan Yang ◽  
Yongxin Li ◽  
Sumod A. Pullarkat ◽  
Pak-Hing Leung
Keyword(s):  
Efficient Method ◽  
Asymmetric Catalytic ◽  
Catalytic Potential ◽  
Efficient Access ◽  
Catalytic Asymmetric

A facile and efficient method for preparing a chiral phosphapalladacycle catalyst via asymmetric catalytic hydrophosphination followed by cyclopalladation was developed. The catalytic potential of the new complex was demonstrated.

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.

scholarly journals Catalytic asymmetric cycloaddition reactions of enoldiazo compounds

2019 ◽  
Vol 17 (17) ◽  
pp. 4183-4195 ◽  
Author(s):  
Kostiantyn O. Marichev ◽  
Michael P. Doyle
Keyword(s):  
Cycloaddition Reactions ◽  
Asymmetric Catalytic ◽  
Recent Advances ◽  
Catalytic Asymmetric

Review of recent advances in asymmetric catalytic cycloaddition reactions of silyl-protected enoldiazo compounds.

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.

scholarly journals Asymmetric catalytic construction of fully substituted carbon stereocenters using acyclic α-branched β-ketocarbonyls: the “Methyl Rule” widely exists

2020 ◽  
Vol 7 (21) ◽  
pp. 3557-3577
Author(s):  
Deqian Sun ◽  
Shuang Yang ◽  
Xinqiang Fang
Keyword(s):  
General Principle ◽  
Asymmetric Catalytic ◽  
Recent Advances ◽  
Catalytic Asymmetric

This review illustrates the recent advances in catalytic asymmetric α-functionalization of acyclic β-ketocarbonyls. A thorough survey of all these reactions indicates the existance of a general principle which is called the “Methyl Rule”.

Fun with (4+3)-Cycloadditions

Synlett ◽  
2018 ◽  
Vol 30 (05) ◽  
pp. 532-541 ◽  
Author(s):  
Michael Harmata
Keyword(s):  
Asymmetric Catalytic ◽  
The Future ◽  
Catalytic Asymmetric

This account describes how I began my adventure in the area of (4+3)-cycloadditions and then focuses on two ongoing projects: a new catalytic asymmetric (4+3)-cycloaddition and what might be described as the ‘rebirth’ of oxidopyridinium ion (4+3)-cycloaddition chemistry. References to other people’s work are made where appropriate.1 Introduction2 Asymmetric, Catalytic (4+3)-Cycloadditions3 Oxidopyridinium Ions and (4+3)-Cycloadditions4 Conclusions and the Future

The enantioselective construction of chiral spirooxindole-based 4-thiazolidinone via asymmetric catalytic formal [3+2] annulation using a bifunctional catalyst

2016 ◽  
Vol 52 (16) ◽  
pp. 3418-3421 ◽  
Author(s):  
Ping Cheng ◽  
Wengang Guo ◽  
Ping Chen ◽  
Yan Liu ◽  
Xin Du ◽  
...  
Keyword(s):  
Efficient Method ◽  
Bifunctional Catalyst ◽  
Asymmetric Catalytic

A facile and efficient method based on the asymmetric [3+2] annulation of 1,4-dithiane-2,5-diol to ketimines for the construction of chiral spirooxindole-based 4-thiazolidinone was reported.

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