Tandem Henry/oxa-Michael route to the 1,3-disubstituted-1,3-dihydrobenzo[c]furan system
Autor: | Otome E. Okoromoba, Frederick A. Luzzio |
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Rok vydání: | 2011 |
Předmět: | |
Zdroj: | Tetrahedron Letters. 52:6530-6533 |
ISSN: | 0040-4039 |
DOI: | 10.1016/j.tetlet.2011.09.123 |
Popis: | The reaction of ortho -formyl cinnamates and ortho -formyl-α-benzalketones with suitably substituted alkylnitro compounds in the presence of 1,1,3,3-tetramethylguanidine results in the formation of 1,3-disubstituted dihydroisobenzofurans. The reaction mechanism entails a base-mediated nitronate addition to the aryl formyl group followed by intramolecular alcoholate addition to the unsaturated component that then affords the isobenzofuran system. |
Databáze: | OpenAIRE |
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