AN UNUSUAL CHROMONE FORMATION, AND ITS REARRANGEMENT TO A COUMARIN

被引：27

作者：

MAJUMDAR, KC ^{[1
]}

CHOUDHURY, PK ^{[1
]}

NETHAJI, M ^{[1
]}

机构：

[1] INDIAN INST SCI,IPC DEPT,BANGALORE 560012,KARNATAKA,INDIA

来源：

TETRAHEDRON LETTERS | 1994年 / 35卷 / 32期

关键词：

D O I：

10.1016/S0040-4039(00)78221-9

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

3-(2'-cyclopentenyl)-4-hydroxy[1]Benzopyran-2-one(2) or its acetate (3) reacts with pyridine hydrotribromide to give the fused furo chromone (4) in 90% yield, which on refluxing in 50% H2SO4 furnishes the fused furo coumarin (5) in 87% yield.

引用

页码：5927 / 5930

页数：4

共 17 条

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[8] STUDIES OF [3,3]SIGMATROPIC REARRANGEMENTS - REARRANGEMENT OF 3-(4-PARA-TOLYLOXYBUT-2-YNYLOXY)[1]BENZOPYRAN-2-ONE [J].

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[9] STUDIES ON THE CYCLIZATION OF 4-[2'-CYCLOHEXENYL]-3-HYDROXY[1]BENZOPYRAN-2-ONE [J].

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