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An efficient ZnO-catalyzed synthesis of novel indole-annulated thiopyrano-chromene derivatives via Domino Knoevenagel-hetero-Diels–Alder reaction

✍ Scribed by Mostafa Kiamehr; Firouz Matloubi Moghaddam

Publisher
Elsevier Science
Year
2009
Tongue
French
Weight
515 KB
Volume
50
Category
Article
ISSN
0040-4039

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✦ Synopsis

An efficient synthesis of pentacyclic indole derivatives is achieved via domino Knoevenagel-hetero-Diels-Alder reactions of indolin-2-thiones and O-propargylated salicylaldehyde derivatives in CH 3 CN in the presence of 10 mol % of ZnO as a heterogeneous catalyst. The products are formed in good to excellent yields.

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