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New syntheses of flavones from Diels-Alder reactions of 2-styrylchromones with ortho-benzoquinodimethanes

Title
New syntheses of flavones from Diels-Alder reactions of 2-styrylchromones with ortho-benzoquinodimethanes
Type
Article in International Scientific Journal
Year
1999
Authors
Silva, AMS
(Author)
Other
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Silva, AMG
(Author)
Other
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Tome, AC
(Author)
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Cavaleiro, JAS
(Author)
Other
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Journal
Pages: 135-139
ISSN: 1434-193X
Publisher: Wiley-Blackwell
Other information
Authenticus ID: P-001-5M1
Abstract (EN): The first reported cycloaddition reactions of 2-styryl-chromones with ortho-benzoquinodimethane afforded 2-[2-(3-aryl-1,2,3,4-tetrahydronaphthyl)]chromones. These cycloadducts were converted into the corresponding 2-[2-(3-arylnaphthyl)]chromones (benzoflavone derivatives) by bromination/dehydrobromination processes. These benzoflavone derivatives were also obtained in one-pot cycloaddition reactions of 2-styrylchromones with ortho-benzoquinodibromomethane.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 5
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