Synthesis 2018; 50(23): 4611-4616
DOI: 10.1055/s-0037-1609554
paper
© Georg Thieme Verlag Stuttgart · New York

DDQ-Mediated Oxidation of Allylarenes: Expedient Access to Cinnamaldehyde-Containing Phenylpropanoids

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Financial support from National Natural Science Foundation of China (No. 21702002 and 31640068), and Anhui Provincial Natural Science Foundation (1808085QC79) is gratefully acknowledged.
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Publication History

Received: 12 May 2018

Accepted after revision: 13 June 2018

Publication Date:
24 July 2018 (online)


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Abstract

Phenylpropanoid natural products containing a cinnamaldehyde motif were easily synthesized from allylarenes mediated by 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) oxidation. Representative examples described herein are five types of 4-hydroxycinnamaldehyde derivatives from monolignols biosynthesis, Boropinal C, and 7-methoxywutaifuranal from plant extracts. Especially, simple synthesis of 7-methoxywutaifuranal was exploited through selective mono-oxidation and subsequent isomerization–ring-closing-metathesis strategy.

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