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ChemInform Abstract: A New Access to Pyrrolizidine Derivatives: Ring Contraction of Methyl (E)-[1,2-Oxazin-3-yl]propenoates.

โœ Scribed by Reinhold Zimmer; Markus Collas; Regina Czerwonka; Ute Hain; Hans-Ulrich Reissig


Publisher
John Wiley and Sons
Year
2008
Weight
40 KB
Volume
39
Category
Article
ISSN
0931-7597

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ChemInform Abstract: A New Ring Contract
โœ K. SATAKE; K. TAKAOKA; M. HASHIMOTO; H. OKAMOTO; M. KIMURA; S. MOROSAWA ๐Ÿ“‚ Article ๐Ÿ“… 2010 ๐Ÿ› John Wiley and Sons โš– 28 KB ๐Ÿ‘ 2 views

A New Ring Contraction Rearrangement of 2,5-and 3,6-Di-tertbutyl-3H-azepines to Pyridine Derivatives. -A novel ring contraction reaction of di-tert-butyl-substituted 3H-azepines furnishing pyridine derivatives under bromination conditions is described. A plausible mechanism for the rearrangement via