UNUSUAL CONDENSATION OF 2-(2-DIMETHYLAMINOVINYL)-1-BENZOPYRAN-4-ONE WITH DIMETHYL ACETYLENEDICARBOXYLATE - FORMATION OF 2,3-BIS(METHOXYCARBONYL)XANTHEN-9-ONE

Authors
GHOSH CK BHATTACHARYYA S PATRA A
Citation
Ck. Ghosh et al., UNUSUAL CONDENSATION OF 2-(2-DIMETHYLAMINOVINYL)-1-BENZOPYRAN-4-ONE WITH DIMETHYL ACETYLENEDICARBOXYLATE - FORMATION OF 2,3-BIS(METHOXYCARBONYL)XANTHEN-9-ONE, Journal of the Chemical Society. Perkin transactions. I, (15), 1997, pp. 2167-2168
Citations number
13
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Journal of the Chemical Society. Perkin transactions. I → ACNP
ISSN journal
0300922X
Issue
15
Year of publication
1997
Pages
2167 - 2168
Database
ISI
SICI code
0300-922X(1997):15<2167:UCO2W>2.0.ZU;2-U
Abstract
Reaction of dienamine 2 (R = H and Me) with N-phenyl-maleimide or chro mone 3 gives xanthones 5 and 8, respectively, through initial [4 + 2] cycloaddition, whereas reaction with dimethyl acetylenedicarboxylate a ffords xanthone 13.