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Issue 37, 2020, Issue in Progress
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Construct indeno[1,2-b]oxepine or cis-cyclopropylacrylate by sulfur ylides

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Abstract

For the first time, the [4 + 3] or [2 + 1] annulation of crotonate-derived sulfur ylides with arylidenemalononitrile or arylidene-1H-indene-1,3(2H)-dione is reported using Na2CO3 as the base. This protocol is advantageous as it does not require prior preparation of arylidenemalononitrile or arylidene-1H-indene-1,3(2H)-dione substrates, due to the independent participation of the base in the two reactions. This mild, operationally multicomponent process can be employed for the transformation of a wide variety of commercially available aldehydes into the corresponding indeno[1,2-b]oxepine or cyclopropyl acrylate core in moderate to excellent yields under mild conditions.

Graphical abstract: Construct indeno[1,2-b]oxepine or cis-cyclopropylacrylate by sulfur ylides

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Supplementary files

Article information


Submitted
18 May 2020
Accepted
29 May 2020
First published
08 Jun 2020

This article is Open Access

RSC Adv., 2020,10, 21895-21906
Article type
Paper

Construct indeno[1,2-b]oxepine or cis-cyclopropylacrylate by sulfur ylides

Q. Chen, Y. Pan, D. Zhao, W. Yang and J. Zheng, RSC Adv., 2020, 10, 21895
DOI: 10.1039/D0RA03919E

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    [Original citation] - Published by The Royal Society of Chemistry.

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