Read e-book online A critical review of the 2005 literature preceded by two PDF

By Gribble Prof , Gordon Gribble , John Joule Prof Gribble Prof

ISBN-10: 0080450253

ISBN-13: 9780080450254

ISBN-10: 0080467571

ISBN-13: 9780080467573

The eighteenth annual quantity of development in Heterocyclic Chemistry, covers the literature released in the course of 2005 on lots of the very important heterocyclic ring platforms. This quantity opens with really expert experiences. the 1st, by means of Heui-Yeon Kim and Cheon-Gyu Cho covers 'The Diels-Alder cycloadditions of 3,5-dibromo-2-pyrone and its derivatives'. the second one, by way of Jean-Luc Girardet and Stanley Lang discusses 'Recent advancements within the chemistry of nucleosides'. the remainder chapters research the 2005 literature at the universal heterocycles so as of accelerating ring measurement and the heteroatoms current. References are integrated into the textual content utilizing the magazine codes followed via complete Heterocyclic Chemistry, and are indexed in complete on the finish of every bankruptcy. incorporated within the index are systematic heterocyclic ring process names. * contains new contributions from specialists within the box * Covers literature released in the course of 2005 on lots of the vital heterocyclic ring structures * offers really expert stories

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H. -J. -G. Cho, Tetrahedron Lett. 2003, 44, 4439. -H. -G. Cho, Tetrahedron Lett. 2003, 44, 95. K. Kranjc, B. Stefane, S. Polanc, M. Kocevar, J. Org. Chem. 2004, 69, 3193. -M. Ryu, A. -W. H. -G. Cho, Synlett 2004, 2197. -S. -H. Lee, J. -G. Cho, Tetrahedron Lett. 2004, 45, 1683. -T. Shin, S. -G. Cho, Tetrahedron Lett. 2004, 45, 5857. A. Zapf, M. Beller, Chem. Commun. 2005, 4, 431. -i. Takao, R. -i. Tadano, Chem. Rev. 2005, 105, 4779. K. J. Bearpark, A. Ndibwami, J. Org. Chem. 2005, 70, 1122. -T.

G. Cho, Tetrahedron Lett. 2003, 44, 4439. -H. -G. Cho, Tetrahedron Lett. 2003, 44, 95. K. Kranjc, B. Stefane, S. Polanc, M. Kocevar, J. Org. Chem. 2004, 69, 3193. -M. Ryu, A. -W. H. -G. Cho, Synlett 2004, 2197. -S. -H. Lee, J. -G. Cho, Tetrahedron Lett. 2004, 45, 1683. -T. Shin, S. -G. Cho, Tetrahedron Lett. 2004, 45, 5857. A. Zapf, M. Beller, Chem. Commun. 2005, 4, 431. -i. Takao, R. -i. Tadano, Chem. Rev. 2005, 105, 4779. K. J. Bearpark, A. Ndibwami, J. Org. Chem. 2005, 70, 1122. -T. -C. Hong, S.

Scheme 43. 3 3 toluene 68 % Br O Br O O Me + H Br O O O 3 O 168-endo 169-endo single diastereomer not observed Me H CONCLUSION Known since the days of Diels and Alder, 2-pyrones have proven to be versatile 1,3-diene synthons, especially with the incorporation of electronic matching of the cycloaddition partners. First reported almost forty years ago, 3,5-dibromo-2-pyrone had remained largely unexplored until the disclosure of a convenient one-step synthetic protocol. Subsequent studies have shown 3,5-dibromo-2-pyrone is a reactive 1,3-diene and proceeds with greater stereoselectivity in D-A cycloadditions than mono-bromo-2-pyrones.

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