Literature DB >> 15355055

Chemoselective cyclizations of divinyl ketones to cyclohexenones mediated by Lewis acid and base.

Nabi A Magomedov1, Piero L Ruggiero, Yuchen Tang.   

Abstract

[reaction: see text] Chemoselective cyclizations of divinyl ketones to cyclohexenones mediated by a sterically demanding Lewis acid and an amine base have been accomplished under mild reaction conditions. The extension of this methodology to the synthesis of eight-membered rings is also demonstrated.

Entities:  

Year:  2004        PMID： 15355055     DOI： 10.1021/ol048545b

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


  3 in total

1.  A tandem 1,3-H-shift-6π-electrocyclization-cyclic 2-amido-diene intramolecular Diels-Alder cycloaddition approach to BCD-Ring of atropurpuran.

Authors:  Ryuji Hayashi; Zhi-Xiong Ma; Richard P Hsung
Journal:  Org Lett       Date:  2011-12-13       Impact factor: 6.005

2.  Reactions of (trialkylsilyl)vinylketenes with lithium ynolates: a new benzannulation strategy.

Authors:  Wesley F Austin; Yongjun Zhang; Rick L Danheiser
Journal:  Org Lett       Date:  2005-09-01       Impact factor: 6.005

3.  A benzannulation strategy for the synthesis of phenols and heteroaromatic compounds based on the reaction of (trialkylsilyl)vinylketenes with lithium ynolates.

Authors:  Wesley F Austin; Yongjun Zhang; Rick L Danheiser
Journal:  Tetrahedron       Date:  2008-01-28       Impact factor: 2.457
  3 in total

北京卡尤迪生物科技股份有限公司 © 2022-2023.