First example of ionic liquids-promoted domino knoevenagel hetero-Diels-Alder reactions:: A facile synthesis of pyrano[3,2-c]coumarins

被引：19

作者：

Yadav, JS ^{[1
]}

Reddy, BVS ^{[1
]}

Naveenkumar, V ^{[1
]}

Rao, RS ^{[1
]}

Nagaiah, K ^{[1
]}

机构：

[1] Indian Inst Chem Technol, Div Organ Chem, Hyderabad 500007, Andhra Pradesh, India

来源：

SYNTHESIS-STUTTGART | 2004年 / 11期

关键词：

Diels-Alder reaction; heterodienes; coumarins; cis-annulated polyclic heterocycles;

D O I：

10.1055/s-2003-829140

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

O-Prenylated aromatic aldehydes undergo smooth intramolecular domino Knoevenagel hetero-Diels-Alder reactions with 4-hydroxycoumarins in the air- and moisture-stable ionic liquid [bmim]BF4 under mild conditions to afford a novel class of cis-annulated pyranocoumarins in high yields. The recovered ionic liquid can be reused in successive runs with consistent activity.

引用

页码：1783 / 1788

页数：6

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