A simple two steps ytterbium triflate-ca
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Soizic Prado; Yves L. Janin; Pierre-Etienne Bost
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Article
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2006
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Journal of Heterocyclic Chemistry
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English
⚖ 221 KB
## Abstract magnified image The preparation of various 2,2‐dimethyl‐2__H__‐chromenes was achieved in two steps __via__ an ytterbium triflate‐catalysed reaction between salicylaldehydes, trimethylorthoformate and 2‐methylpropene. From salicylaldehyde, two reaction products were characterised: 4‐met