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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 40, 2010 - Issue 14
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Original Articles

Efficient and Short Route for the Regioselective Synthesis of Highly Substituted, Angularly Fused Furano-, Pyrano-, and Pyrrolocoumarin/Quinolone Derivatives by Metal-Mediated Cyclization

, &
Pages 2147-2157 | Received 10 May 2009, Published online: 17 Jun 2010
 

Abstract

A one-step efficacious method for the construction of a variety of substituted furano-, pyrano-, and pyrrolocoumarins and pyrroloquinolones in good to excellent yields has been developed.

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Corrigendum

ACKNOWLEDGMENTS

We thank the Department of Science and Technology (DST), New Delhi and the Council for Scientific and Industrial Research (CSIR), New Delhi, for financial assistance. S. M. and B. C. are thankful to the CSIR (New Delhi) for their fellowships.

Notes

a Overall yield.

dp – deallylated product.

nr – no reaction.

A = PdCl2 (4 mol %), Cu(acac)2·H2O (3 equiv), LiCl (3 equiv), DMF-water (9:1), rt, 3 h.

B = Pd(acac)2 (20 mol%), (0-tolyl)3P (40 mol %), acetic acid (10 equiv), CH3CN, 110 °C, 1 h.

C = AlCl3 (1.5 equiv), dichlorobenzene, reflux, 1 h.

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