Literature DB >> 12489959

Tandem reactions to construct heterocycles via phosphine-catalyzed umpolung addition and intramolecular conjugate addition.

Cheng Lu1, Xiyan Lu.   

Abstract

[reaction: see text] A highly efficient method for constructing heterocycles was achieved by phosphine-catalyzed tandem umpolung addition and intramolecular conjugate addition. This strategy offers a simple and promising method for constructing synthetically useful heterocycles under neutral conditions with high atom economy.

Entities:  

Year:  2002        PMID： 12489959     DOI： 10.1021/ol0270733

Source DB:  PubMed          Journal:  Org Lett        ISSN： 1523-7052            Impact factor:   6.005


  16 in total

1.  Phosphine-initiated general base catalysis: facile access to benzannulated 1,3-diheteroatom five-membered rings via double-Michael reactions of allenes.

Authors:  Judy Szeto; Vardhineedi Sriramurthy; Ohyun Kwon
Journal:  Org Lett       Date:  2011-09-20       Impact factor: 6.005

2.  Phosphine-catalyzed β'-umpolung addition of nucleophiles to activated α-alkyl allenes.

Authors:  Tioga J Martin; Venus G Vakhshori; Yang S Tran; Ohyun Kwon
Journal:  Org Lett       Date:  2011-04-14       Impact factor: 6.005

3.  Phosphine-catalyzed annulations of azomethine imines: allene-dependent [3 + 2], [3 + 3], [4 + 3], and [3 + 2 + 3] pathways.

Authors:  Risong Na; Chengfeng Jing; Qihai Xu; Hui Jiang; Xi Wu; Jiayan Shi; Jiangchun Zhong; Min Wang; Diego Benitez; Ekaterina Tkatchouk; William A Goddard; Hongchao Guo; Ohyun Kwon
Journal:  J Am Chem Soc       Date:  2011-08-03       Impact factor: 15.419

4.  Bisphosphine-catalyzed mixed double-Michael reactions: asymmetric synthesis of oxazolidines, thiazolidines, and pyrrolidines.

Authors:  Vardhineedi Sriramurthy; Gregg A Barcan; Ohyun Kwon
Journal:  J Am Chem Soc       Date:  2007-10-09       Impact factor: 15.419

Review 5.  Phosphine Organocatalysis.

Authors:  Hongchao Guo; Yi Chiao Fan; Zhanhu Sun; Yang Wu; Ohyun Kwon
Journal:  Chem Rev       Date:  2018-09-27       Impact factor: 60.622

6.  Phosphine-Catalyzed Intramolecular Cyclizations of α-Nitroethylallenoates Forming (Z)-Furanone Oximes.

Authors:  Qing-Fa Zhou; Kui Zhang; Lingchao Cai; Ohyun Kwon
Journal:  Org Lett       Date:  2016-05-27       Impact factor: 6.005

7.  Diphosphine-catalyzed mixed double-Michael reaction: a unified synthesis of indolines, dihydropyrrolopyridines, benzimidazolines, tetrahydroquinolines, tetrahydroisoquinolines, dihydrobenzo-1,4-oxazines, and dihydrobenzo-3,1-oxazines.

Authors:  Vardhineedi Sriramurthy; Ohyun Kwon
Journal:  Org Lett       Date:  2010-03-05       Impact factor: 6.005

8.  Asymmetric carbon-carbon bond formation gamma to a carbonyl group: phosphine-catalyzed addition of nitromethane to allenes.

Authors:  Sean W Smith; Gregory C Fu
Journal:  J Am Chem Soc       Date:  2009-10-14       Impact factor: 15.419

9.  Theory-Guided Design of Brønsted Acid-Assisted Phosphine Catalysis: Synthesis of Dihydropyrones from Aldehydes and Allenoates.

Authors:  Gardner S Creech; Xue-Feng Zhu; Branden Fonovic; Travis Dudding; Ohyun Kwon
Journal:  Tetrahedron       Date:  2008-07-14       Impact factor: 2.457

10.  Advances in nucleophilic phosphine catalysis of alkenes, allenes, alkynes, and MBHADs.

Authors:  Yi Chiao Fan; Ohyun Kwon
Journal:  Chem Commun (Camb)       Date:  2013-12-25       Impact factor: 6.222
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