+++Tetrahedron Letters & Tetrahedron спасибо Chem_DM

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1. A facile synthesis of (S)-(−)-7,8-difluoro-3,4-dihydro-3-methyl-2H-1,4-benzoxazine by zinc chloride assisted mitsunobu cyclization reaction.
Soon Bang Kang, Eu Jin Ahn, Youseung Kim, Yong Hae Kim
Tetrahedron Letters, Volume 37, Issue 52, 23 December 1996, Pages 9317-9320

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http://dx.doi.org/10.1016/S0040-4039(97)82952-8

2. Asymmetric metal-free synthesis of fluoroquinolones by organocatalytic hydrogenation.
Magnus Rueping, Mirjam Stoeckel, Erli Sugiono, Thomas Theissmann
Tetrahedron, Volume 66, Issue 33, 14 August 2010, Pages 6565-6568

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http://dx.doi.org/10.1016/j.tet.2010.04.091

3. Synthesis of substituted 3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine as new scaffolds for potential bioactive compounds.
N. Henry, I. Sánchez, A. Sabatié, V. Bénéteau, G. Guillaumet, M.D. Pujol
Tetrahedron, Volume 62, Issue 10, 6 March 2006, Pages 2405-2412

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http://dx.doi.org/10.1016/j.tet.2005.11.071

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