Journal
TETRAHEDRON
Volume 67, Issue 51, Pages 9993-9997Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2011.09.063
Keywords
Flavones; Regioselective cyclization; Ynones; 6-endo Cyclization
Categories
Funding
- MEXT [2105, 22106503]
- Promotion of Science and Engineering
- Astellas Foundation for Research on Metabolics Disorders
- Grants-in-Aid for Scientific Research [23710264, 22106503] Funding Source: KAKEN
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A catalytic amount of DMAP promoted cyclization of o-alkynoylphenols via a 6-endo cyclization mode leading to flavone derivatives in high yields without forming 5-exo cyclized aurone derivatives. Utilizing this method, methoxy substituted flavone and alkyl substituted gamma-benzopyranone derivatives were synthesized. (C) 2011 Elsevier Ltd. All rights reserved.
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