Literature DB >> 16211103

Baylis-Hillman reactions of N-tosyl aldimines and aryl aldehydes with 3-methylpenta-3,4-dien-2-one.

Gui-Ling Zhao1, Min Shi.   

Abstract

The attempted Baylis-Hillman reactions of N-tosyl aldimines and aryl aldehydes with 3-methylpenta-3,4-dien-2-one gave the corresponding Baylis-Hillman adducts 3 and 6 in moderate to good yields in the presence of DMAP in DMSO, respectively. In the case of the aza-Baylis-Hillman reactions of N-tosyl aldimines with 3-methylpenta-3,4-dien-2-one catalyzed by PBu3, the corresponding aza-Baylis-Hillman derivatives 4 and 5 were formed at the same time.

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Year:  2005        PMID： 16211103     DOI： 10.1039/b510572b

Source DB:  PubMed          Journal:  Org Biomol Chem        ISSN： 1477-0520            Impact factor:   3.876


  10 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.  Phosphine-catalyzed [4+2] annulations of 2-alkylallenoates and olefins: synthesis of multisubstituted cyclohexenes.

Authors:  Yang S Tran; Tioga J Martin; Ohyun Kwon
Journal:  Chem Asian J       Date:  2011-07-07

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.  Discussion Addendum for: Phosphine-Catalyzed [4 + 2] Annulation: Synthesis of Ethyl 6-Phenyl-1-tosyl-1,2,5,6-tetrahydropyridine-3-carboxylate.

Authors:  Aslam C Shaikh; Ohyun Kwon
Journal:  Organic Synth       Date:  2019-04-22

7.  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

8.  Anion-catalyzed addition of gamma-silylallenyl esters to aldehydes: a new entry into [3.2.1] bicyclic natural products.

Authors:  Pradip Maity; Salvatore D Lepore
Journal:  J Am Chem Soc       Date:  2009-04-01       Impact factor: 15.419

9.  Alcohol-assisted phosphine catalysis: one-step syntheses of dihydropyrones from aldehydes and allenoates.

Authors:  Gardner S Creech; Ohyun Kwon
Journal:  Org Lett       Date:  2008-01-04       Impact factor: 6.005

10.  Phosphine-catalyzed [5+1] annulation of δ-sulfonamido-substituted enones with N-sulfonylimines: a facile synthesis of tetrahydropyridines.

Authors:  Leijie Zhou; Chunhao Yuan; Yuan Zeng; Honglei Liu; Chang Wang; Xing Gao; Qijun Wang; Cheng Zhang; Hongchao Guo
Journal:  Chem Sci       Date:  2018-01-05       Impact factor: 9.825
  10 in total

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