Literature DB >> 12149008

Metathesis route to bridged metallocenes.

Masamichi Ogasawara1, Takashi Nagano, Tamio Hayashi.   

Abstract

A variety of bridged metallocenes of Fe(II), Ru(II), Zr(IV), or Hf(IV) were prepared in good yield by the interannular ring-closing metathesis reaction of 1,1'-diallylmetallocenes using the Ru-carbene catalyst, and the present method was extended to diastereoselective reaction to give dl- or meso-bridged metallocenes with excellent stereoselectivity.

Entities:  

Year:  2002        PMID： 12149008     DOI： 10.1021/ja026401r

Source DB:  PubMed          Journal:  J Am Chem Soc        ISSN： 0002-7863            Impact factor:   15.419


  3 in total

1.  Diastereoselective temporary silicon-tethered ring-closing-metathesis reactions with prochiral alcohols: a new approach to long-range asymmetric induction.

Authors:  P Andrew Evans; Jian Cui; Gerald P Buffone
Journal:  Angew Chem Int Ed Engl       Date:  2003-04-17       Impact factor: 15.336

2.  Ansa-metallocene polymerization catalysts derived from [2+2]cycloaddition reactions of bis(1-methylethenyl-cyclopentadienyl)zirconium systems.

Authors:  Jan Paradies; Gerald Kehr; Roland Fröhlich; Gerhard Erker
Journal:  Proc Natl Acad Sci U S A       Date:  2006-10-10       Impact factor: 11.205

3.  Formation of alkyne-bridged ferrocenophanes using ring-closing alkyne metathesis on 1,1'-diacetylenic ferrocenes.

Authors:  Celine Bittner; Dirk Bockfeld; Matthias Tamm
Journal:  Beilstein J Org Chem       Date:  2019-10-24       Impact factor: 2.883
  3 in total

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