Premium
Correction of a Reported Xanthone Synthesis: The Preparation of a Benzo[ c ]coumarin
Author(s) -
Benn Michael H.,
Parvez Masood,
Perry Nigel B.,
Rauk Arvi,
van Klink John W.
Publication year - 2010
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.200900289
Subject(s) - chemistry , xanthone , coumarin , stereochemistry , pyran , organic chemistry
Abstract Reinvestigation of a reported synthesis of 5,8‐dihydroxy‐1,3‐dimethoxyxanthone from the reaction of 3,5‐dimethoxyphenol with 2‐(methoxycarbonyl)‐1,4‐benzoquinone resulted in the identification of the product as the isomer of benzo[ c ]coumarin, i.e. , 7,10‐dihydroxy‐1,3‐dimethoxy‐6 H ‐dibenzo[ b,d ]pyran‐6‐one, established by X‐ray crystallography. This requires the revision of the structures of the derivatives that were reported.