Synthesis of symmetrical and unsymmetrical triarylpyrylium ions via an inverse electron demand Diels-Alder reaction.

C T Fathimath Salfeenanull BasavarajaK T AshithaV Praveen KumarSunil VarugheseCherumuttathu H Suresh Balappa Somappa Sasidhar

Published in: Chemical communications (Cambridge, England) (2018)

BF3·OEt2 mediated inverse electron demand Diels-Alder (IEDDA) reaction of chalcones with aryl acetylenes is reported for the synthesis of symmetrical and unsymmetrical 2,4,6-triarylpyrylium ions. The protocol provides an effective one-pot method for the utilization of readily available simple substrates under mild reaction conditions leading to a diverse array of pyrylium ions in moderately good yield.

Keyphrases

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