STUDIES ON SYNTHESIS OF 3(2H)-BENZOFURANONE DERIVATIVES

Two known methods were used for synthesis of 2,6-disubstituted-3(2H)-benzofuranone derivatives. It was found that depending on the reaction conditions, degradation products or the products of oxidation were isolated. This latter reaction became the main process when the ring closure was performed st...

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Published inSynthetic communications Vol. 32; no. 15; pp. 2325 - 2343
Main Authors Bokotey, Sándor, Kövári-Rádkai, Mária, Podányi, Benjámin, Ritz, Imola, Hanusz, Miklós, Bátori, Sándor
Format Journal Article
LanguageEnglish
Published NEW YORK Taylor & Francis Group 01.01.2002
Marcel Dekker Inc
Subjects
Benzofuranones
Bibenzofuranoids
Chemistry
Chemistry, Organic
Dimerization
Hoesch reaction
Physical Sciences
Science & Technology
Transbromination
CONVENIENT SYNTHESIS
OXYGEN
Hoesch reaction
benzofuranones
bibenzofuranoids
transbromination
BEHAVIOR
dimerization
OSTEOPOROSIS
2-ARYL-3(2H)-BENZOFURANONES
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Summary:Two known methods were used for synthesis of 2,6-disubstituted-3(2H)-benzofuranone derivatives. It was found that depending on the reaction conditions, degradation products or the products of oxidation were isolated. This latter reaction became the main process when the ring closure was performed starting from methoxy- or 2-propoxy-desoxybenzoin and diethyl bromo-(or chloro-)-malonate to give d,l- and meso-dimers of the substituted 3(2H)-benzofuranones.
ISSN:0039-7911
1532-2432
DOI:10.1081/SCC-120006003