(CF3CO)2O/K2CO3‐Mediated Synthesis of 3‐Sulfonylchromones through Cyclocondensation of β‐Ketosulfones and Carboxylic Acids

(CF3CO)2O/K2CO3‐Mediated Synthesis of 3‐Sulfonylchromones through Cyclocondensation of β‐Ketosulfones and Carboxylic Acids

One‐pot (CF3CO)2O/K2CO3‐mediated tandem cyclocondensation of β‐ketosulfones with carboxylic acids provides diversified 3‐sulfonylchromones in good to excellent yields by refluxing MeCN under high‐pressure (using a sealed tube) and dry‐nitrogen atmospheric conditions. This study proposed and discusse...

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Veröffentlicht in:Advanced synthesis & catalysis 2023-05, Vol.365 (9), p.1442-1448
Hauptverfasser: Chang, Meng‐Yang, Lin, Chun‐Yi
Format: Artikel
Sprache:eng
Schlagworte:
3-Sulfonylchromones
Carbon
Carboxylic Acids
Chemical reactions
Chemical synthesis
Cyclocondensation
Refluxing
β-Ketosulfones
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container_title Advanced synthesis & catalysis
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creator Chang, Meng‐Yang
Lin, Chun‐Yi
description One‐pot (CF3CO)2O/K2CO3‐mediated tandem cyclocondensation of β‐ketosulfones with carboxylic acids provides diversified 3‐sulfonylchromones in good to excellent yields by refluxing MeCN under high‐pressure (using a sealed tube) and dry‐nitrogen atmospheric conditions. This study proposed and discussed a plausible mechanism. The paper also described the formation of 3‐sulfonylflavones and gram‐scale synthesis of 3‐sulfonylchromones. Various combinations of anhydrides and bases‐promoted reaction conditions were investigated for the (4+2) annulation via one carbon‐oxygen (C−O) bond and one carbon‐carbon (C=C) bond formations.
doi_str_mv 10.1002/adsc.202300207
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source Wiley-Blackwell Journals
subjects 3-Sulfonylchromones
Carbon
Carboxylic Acids
Chemical reactions
Chemical synthesis
Cyclocondensation
Refluxing
β-Ketosulfones
title (CF3CO)2O/K2CO3‐Mediated Synthesis of 3‐Sulfonylchromones through Cyclocondensation of β‐Ketosulfones and Carboxylic Acids
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