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One-pot three component reaction for the synthesis of chromone-linked naphthopyrans
被引:6
|作者:
Panja, Suman Kalyan
[1
]
Maiti, Sourav
[1
]
Bandyopadhyay, Chandrakanta
[1
]
机构:
[1] RK Mission Vivekananda Centenary Coll, Dept Chem, Kolkata 700118, W Bengal, India
关键词:
chromone-3-carbaldehyde;
multicomponent reaction;
dimedone;
Meldrum's acid;
1-benzopyran;
MELDRUMS ACID;
MULTICOMPONENT REACTIONS;
CRYSTAL-STRUCTURE;
DERIVATIVES;
ALDEHYDES;
D O I:
10.3184/030823409X12561496499339
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Heating an equimolar mixture of 6-substituted chromone-3-carbaldehydes, beta-naphthol and dimedone in AcOH produces 3,3-dimethyl-11-(4-oxo-4H-1-benzopyran-3-yl)-1,2,3,4-tetrahydronaphtho[2,1-b]-1-benzopyran-11H-1-ones, whereas under similar condition use of Meldrum's acid in place of dimedone gave 1-benzopyrano[2,3-b]naphtho[1,2-e] pyran-7aH, 13H-13-ones and 3,4-dihydro-4-(4-oxo-4H-1-benzopyran-3-yl)naphtho[2,1-b]pyran-2H-2-ones.
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页码:692 / 695
页数:4
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