Abstract
Two tert-butyl groups adjacent to the sulfur atom in the title compound 1 hinder elimination of sulfur with ring contraction. Compound 1 can be obtained in a multistep reaction involving a Beckmann rearrangement and a Pummerer reaction. When 1 is heated in benzene in the presence of PPh3 ring contraction takes place with formation of the pyridine 2.
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More From: Angewandte Chemie International Edition in English
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