Issue 62, 2014
From the journal:

Chemical Communications

A copper(ii) perchlorate-promoted tandem reaction of internal alkynol and salicyl N-tosylhydrazone: direct access to isochromeno[3,4-b]chromene†

Hai Xiao Siyang,a   Xu Rui Wu,a   Xiao Yue Ji,a   Xin Yan Wua  and  Pei Nian Liu*a  

* Corresponding authors

a Shanghai Key Laboratory of Functional Materials Chemistry, Key Lab for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China
E-mail: liupn@ecust.edu.cn
Fax: +86-21-64250552

Abstract

A copper(II) perchlorate-promoted tandem reaction of internal alkynol and salicyl N-tosylhydrazone provides a novel, concise method for constructing isochromeno[3,4-b]chromene in 35–94% yields. The tandem reaction involves cycloisomerization, formal [4+2] cycloaddition and an elimination process.

Graphical abstract: A copper(ii) perchlorate-promoted tandem reaction of internal alkynol and salicyl N-tosylhydrazone: direct access to isochromeno[3,4-b]chromene

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Article information

DOI
https://doi.org/10.1039/C4CC02862G
Article type
Communication
Submitted
17 Apr 2014
Accepted
09 Jun 2014
First published
11 Jun 2014

Chem. Commun., 2014,50, 8514-8517

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A copper(II) perchlorate-promoted tandem reaction of internal alkynol and salicyl N-tosylhydrazone: direct access to isochromeno[3,4-b]chromene

H. X. Siyang, X. R. Wu, X. Y. Ji, X. Y. Wu and P. N. Liu, Chem. Commun., 2014, 50, 8514 DOI: 10.1039/C4CC02862G

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