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Literature DB >> 28690345

N-Heterocyclic Carbene and Chiral Brønsted Acid Cooperative Catalysis for a Highly Enantioselective [4+2] Annulation.

Abstract

A chiral NHC/Brønsted acid cooperative catalysis system has been developed for asymmetric annulation of functionalized benzaldehydes and activated ketones through dearomative generation of dienolate.

Entities: Chemical Disease Species

Keywords: Brønsted acid; NHC; annulation; cooperative

Year: 2016 PMID： 28690345 PMCID： PMC5496987 DOI： 10.1055/s-0036-1588349

Source DB: PubMed Journal: Synthesis (Stuttg) ISSN： 0039-7881 Impact factor: 3.157

42 in total

1. N-heterocyclic carbene/Lewis acid strategy for the stereoselective synthesis of spirocyclic oxindole-dihydropyranones.

Authors: Zhaoxin Xiao; Chenxia Yu; Tuanjie Li; Xiang-Shan Wang; Changsheng Yao
Journal: Org Lett Date: 2014-07-02 Impact factor: 6.005

2. Metal and carbene organocatalytic relay activation of alkynes for stereoselective reactions.

Authors: Kayambu Namitharan; Tingshun Zhu; Jiajia Cheng; Pengcheng Zheng; Xiangyang Li; Song Yang; Bao-An Song; Yonggui Robin Chi
Journal: Nat Commun Date: 2014-05-28 Impact factor: 14.919

3. Organocatalytic iminium ion/carbene reaction cascade for the formation of optically active 2,4-disubstituted cyclopentenones.

Authors: Christian Borch Jacobsen; Kim L Jensen; Jonas Udmark; Karl Anker Jørgensen
Journal: Org Lett Date: 2011-08-19 Impact factor: 6.005

4. Catalytic asymmetric α-acylation of tertiary amines mediated by a dual catalysis mode: N-heterocyclic carbene and photoredox catalysis.

Authors: Daniel A DiRocco; Tomislav Rovis
Journal: J Am Chem Soc Date: 2012-05-02 Impact factor: 15.419

5. N-heterocyclic carbene and Brønsted acid cooperative catalysis: asymmetric synthesis of trans-γ-lactams.

Authors: Xiaodan Zhao; Daniel A DiRocco; Tomislav Rovis
Journal: J Am Chem Soc Date: 2011-07-25 Impact factor: 15.419

6. Chiral Brønsted acid-catalyzed direct Mannich reactions via electrophilic activation.

Authors: Daisuke Uraguchi; Masahiro Terada
Journal: J Am Chem Soc Date: 2004-05-05 Impact factor: 15.419

7. Annulation of o-Quinodimethanes through N-Heterocyclic Carbene Catalysis for the Synthesis of 1-Isochromanones.

Authors: Daniel Janssen-Müller; Santanu Singha; Theresa Olyschläger; Constantin G Daniliuc; Frank Glorius
Journal: Org Lett Date: 2016-08-23 Impact factor: 6.005

8. Asymmetric synthesis of functionalized cyclopentanones via a multicatalytic secondary amine/N-heterocyclic carbene catalyzed cascade sequence.

Authors: Stephen P Lathrop; Tomislav Rovis
Journal: J Am Chem Soc Date: 2009-09-30 Impact factor: 15.419

9. Insights into Stereoselective Aminomethylation Reaction of α,β-Unsaturated Aldehyde with N,O-Acetal via N-Heterocyclic Carbene and Brønsted Acid/Base Cooperative Organocatalysis.

Authors: Yang Wang; Mingsheng Tang; Yanyan Wang; Donghui Wei
Journal: J Org Chem Date: 2016-06-14 Impact factor: 4.354