Polyphosphoric acid-promoted synthesis of coumarins lacking substituents at positions 3 and 4

Coumarins have recently emerged as a hot topic of research due to their diverse pharmacological properties. This work described a method for the synthesis of 3,4-diunsubstituted coumarins promoted by polyphosphoric acid (PPA) from salicylaldehydes and acetic anhydride. Various coumarins were produce...

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Published in:Synthetic communications 2020-10, Vol.50 (20), p.3080-3085
Main Authors: Yang, Li-Shou, Wang, Yu, Wang, En-Hua, Yang, Jan, Pan, Xiong, Liao, Xiu, Yang, Xiao-Sheng
Format: Article
Language:English
Subjects:
Condensation
coumarin
polyphosphoric acid
salicylaldehyde
Synthesis
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cited_by cdi_FETCH-LOGICAL-c338t-721a171b98e243cddf37f037f1a539f715364d928bb052fc049705cfea32a123
cites cdi_FETCH-LOGICAL-c338t-721a171b98e243cddf37f037f1a539f715364d928bb052fc049705cfea32a123
container_end_page 3085
container_issue 20
container_start_page 3080
container_title Synthetic communications
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creator Yang, Li-Shou
Wang, Yu
Wang, En-Hua
Yang, Jan
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Liao, Xiu
Yang, Xiao-Sheng
description Coumarins have recently emerged as a hot topic of research due to their diverse pharmacological properties. This work described a method for the synthesis of 3,4-diunsubstituted coumarins promoted by polyphosphoric acid (PPA) from salicylaldehydes and acetic anhydride. Various coumarins were produced in good to excellent yields.
doi_str_mv 10.1080/00397911.2020.1792498
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subjects Condensation
coumarin
polyphosphoric acid
salicylaldehyde
Synthesis
title Polyphosphoric acid-promoted synthesis of coumarins lacking substituents at positions 3 and 4
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