L. Voskressensky, S. Akbulatov, T. Borisova
May 31, 2013
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0
Influential Citations
7
Citations
Journal
Chemistry of Heterocyclic Compounds
Abstract
It was shown that 2,3,4,5-tetrahydro-1,4-benzoxazepines were cleaved at the N–C(5) bond under the action of activated alkynes in methanol, forming o-(methoxyethyl)- and o-(methoxybenzyl)-phenyl(aminoethyl) ethers. The cleavage rate depended on the electronic effects of the substituents at the C-5 atom. Thiazepine ring expansion in tetrahydro-1,4-benzothiazepine was achieved for the first time via reaction with methyl propiolate to give a benzothiazonine.