Literature DB >> 23788474

Asymmetric ion pair catalysis of 6π electrocyclizations: Brønsted acid catalyzed enantioselective synthesis of optically active 1,4-dihydropyridazines.

Arindam Das1, Chandra M R Volla, Iuliana Atodiresei, Wolfgang Bettray, Magnus Rueping.   

Abstract

Entities:  

Keywords:  Brønsted acid; electrocyclic reactions; heterocycles; reaction mechanisms; synthetic methods

Year:  2013        PMID： 23788474     DOI： 10.1002/anie.201301638

Source DB:  PubMed          Journal:  Angew Chem Int Ed Engl        ISSN： 1433-7851            Impact factor:   15.336


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  5 in total

1.  Catalytic enantioselective synthesis of indanes by a cation-directed 5-endo-trig cyclization.

Authors:  Craig P Johnston; Abhishek Kothari; Tetiana Sergeieva; Sergiy I Okovytyy; Kelvin E Jackson; Robert S Paton; Martin D Smith
Journal:  Nat Chem       Date:  2015-01-12       Impact factor: 24.427

2.  Brønsted acid-promoted hydroamination of unsaturated hydrazones: access to biologically important 5-arylpyrazolines.

Authors:  Han He; Ning Xu; Honglin Zhang; Bin Chen; Zhengnan Hu; Kang Guo; Jianlin Chun; Shujun Cao; Yingguang Zhu
Journal:  RSC Adv       Date:  2021-05-11       Impact factor: 4.036

3.  No acid required: 4π and 6π electrocyclization reactions of dienyl diketones for the synthesis of cyclopentenones and 2H-Pyrans.

Authors:  Steven D Jacob; Joshua L Brooks; Alison J Frontier
Journal:  J Org Chem       Date:  2014-10-17       Impact factor: 4.354

4.  Stereoselective Synthesis of Atropisomeric Acridinium Salts by the Catalyst-Controlled Cyclization of ortho-Quinone Methide Iminiums.

Authors:  Xingxing Wu; Christof Sparr
Journal:  Angew Chem Int Ed Engl       Date:  2022-02-25       Impact factor: 16.823

5.  Carbene-catalyzed enantioselective annulation of dinucleophilic hydrazones and bromoenals for access to aryl-dihydropyridazinones and related drugs.

Authors:  Bivas Mondal; Rakesh Maiti; Xing Yang; Jun Xu; Weiyi Tian; Jia-Lei Yan; Xiangyang Li; Yonggui Robin Chi
Journal:  Chem Sci       Date:  2021-05-17       Impact factor: 9.825
  5 in total

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