| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5274712 | Tetrahedron Letters | 2012 | 4 Pages |
Abstract
An aqueous solution of thiourea dioxide was used to catalyze a one-pot three-component coupling reaction of an aromatic aldehyde, malononitrile, and α- or β-naphthol for the synthesis of various naphthopyran derivatives in excellent yields. At the end of the reaction, the product was isolated by filtration or extraction and the remaining aqueous solution of thiourea dioxide was reused as such for several subsequent runs.
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Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Sanny Verma, Suman L. Jain,