Thiazole-5-carbaldehyde Synthesis by Cascade Annulation of Enaminones and KSCN with Dess–Martin Periodinane Reagent
作者:Kang Chen、Baoli Zhao、Yunyun Liu、Jie-Ping Wan
DOI:10.1021/acs.joc.2c01881
日期:2022.11.4
reagent-mediated reactions of tertiary enaminones with potassium thiocyanate for the synthesis of thiazole-5-carbaldehydes are developed. The product formation involves cascade hydroxyl thiocyanation of the C═C double bond, intramolecular hydroamination of the C≡N bond, and thiazole annulation by condensation on the ketone carbonyl site, representing novelreaction pathways in the reactions between enaminones