Heterocyclic Compounds
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ChemInform Abstract: 2-Substituted 4-Anilinopiperidines from 2H-Thiopyran-2-thiones.
First published: 21 May 2010
Abstract
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ChemInform Abstract
The method is based on the conversion of iminothiopyrans (VI) to dihydropyridinethiones (VII) by a Dimroth-type rearrangement. The final hydrogenation of syn/anti-mixtures of iminium iodides (VIII) provides the separable piperidines (IX) and (X) with cis-isomers as major products.
