Issue 24, 2009
From the journal:

Chemical Communications

TfOH-catalyzed intramolecular alkyne–ketonemetathesis leading to highly substituted five-membered cyclic enones†‡

Tienan Jin,*a   Fan Yang,a   Chunli Liua  and  Yoshinori Yamamoto*a  

* Corresponding authors

a Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8548, Japan
E-mail: tjin@mail.tains.tohoku.ac.jp, yoshi@mail.tains.tohoku.ac.jp
Fax: +81-022-795-6784
Tel: +81-022-795-6581

Abstract

The intramolecular carbocyclization of tethered alkynyl ketones to five-membered cyclic enones is shown to be catalyzed by trifluoromethanesulfonic acid in MeOH, proceeding in good to excellent yields and with high selectivities.

Graphical abstract: TfOH-catalyzed intramolecular alkyne–ketone metathesis leading to highly substituted five-membered cyclic enones

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Article information

DOI
https://doi.org/10.1039/B905954G
Article type
Communication
Submitted
25 3 2009
Accepted
07 5 2009
First published
21 5 2009

Chem. Commun., 2009, 3533-3535

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TfOH-catalyzed intramolecular alkyne–ketone metathesis leading to highly substituted five-membered cyclic enones

T. Jin, F. Yang, C. Liu and Y. Yamamoto, Chem. Commun., 2009, 3533 DOI: 10.1039/B905954G

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