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Intramolecular Diels‐Alder Reaction of Styrene with Phenoxy‐Acrylate for Construction of Functionalized Naphthalenes

Intramolecular Diels‐Alder Reaction of Styrene with Phenoxy‐Acrylate for Construction of... The DABCO promoted domino reaction of 1‐(2‐hydroxyphenyl)‐3‐phenylprop‐2‐en‐1‐ones and alkyl propiolate or dialkyl but‐2‐ynedioate in toluene at high temperature resulted in methyl 3‐(2‐hydroxybenzoyl)‐1‐naphthoates or dimethyl 3‐(2‐hydroxybenzoyl)naphthalene‐1,2‐dicarboxylate in moderate to good yields. The hydroxyl group played a crucial rule in the reaction. The reaction mechanism of this formal [4+2] cycloaddition reaction was believed with initially formation of methyl 3‐(2‐cinnamoylphenoxy)acrylate, intramolecular Diels‐Alder reaction, ring‐opening of benzo[b]xanthene and aromatization process. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Asian Journal of Organic Chemistry Wiley

Intramolecular Diels‐Alder Reaction of Styrene with Phenoxy‐Acrylate for Construction of Functionalized Naphthalenes

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References (51)

Publisher
Wiley
Copyright
© 2021 Wiley‐VCH GmbH
ISSN
2193-5807
eISSN
2193-5815
DOI
10.1002/ajoc.202100401
Publisher site
See Article on Publisher Site

Abstract

The DABCO promoted domino reaction of 1‐(2‐hydroxyphenyl)‐3‐phenylprop‐2‐en‐1‐ones and alkyl propiolate or dialkyl but‐2‐ynedioate in toluene at high temperature resulted in methyl 3‐(2‐hydroxybenzoyl)‐1‐naphthoates or dimethyl 3‐(2‐hydroxybenzoyl)naphthalene‐1,2‐dicarboxylate in moderate to good yields. The hydroxyl group played a crucial rule in the reaction. The reaction mechanism of this formal [4+2] cycloaddition reaction was believed with initially formation of methyl 3‐(2‐cinnamoylphenoxy)acrylate, intramolecular Diels‐Alder reaction, ring‐opening of benzo[b]xanthene and aromatization process.

Journal

Asian Journal of Organic ChemistryWiley

Published: Oct 1, 2021

Keywords: [4+2]cycloaddition; Diels-Alder reaction; chalcone; electron-deficient alkyne; naphthalene; annulation reaction

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