Tetrahedron Letters p. 7057 - 7060 (1989)
Update date:2022-08-05
Topics:
Rigo
Fasseur
Cherepy
Couturier
Treatment of pyroglutamic acids with acyl-activating reagents (P2O5/CH3SO3H, PPE....), possibly in the presence of triethylamine, yields acyl iminium salts, that can react in-situ with aromatic compounds to give
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