Download e-book for iPad: Advances in Cycloaddition. Volume 5 by M. Harmata

By M. Harmata

ISBN-10: 0080546382

ISBN-13: 9780080546384

ISBN-10: 0762303468

ISBN-13: 9780762303465

The improvement and alertness of cycloaddition method remains to be on the leading edge of study in man made natural chemistry. This quantity starts off with a evaluate of equipment to be had for the synthesis of 7-membered earrings and is with paintings on metal-catalyzed cycloadditions. there's then an replace at the cycloaddition chemistry of 2-pyrone, after which a special software of photocycloaddition is unique. the ultimate bankruptcy is a dialogue of the newest explorations of the response of rhodium-stabilized vinyl carbenoids with dienes.

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Additional resources for Advances in Cycloaddition. Volume 5

Sample text

110 *C "- 94*/0 35 H (59) 47 E e % ~ (60) H 49 lower catalyst load, the cycloadditions of 46 and 48 are also successful, although the benefits associated with decreasing the catalyst load are accompanied by a slightly reduced yield. Attempted cycloadditions of substrates, which would lead to cycloadducts beating two angular methyl groups, have been unsuccessful thus far. Likewise, substrates beating substitution of the alkene terminus do not undergo efficient cycloaddition but react instead to form products primarily arising from 13-hydride elimination pathways.

22. ; Yamakawa, K. Tetrahedron Lett. 1992, 33, 7545. 23. Katritzky, A. ; Seryduk, L. J. Am. Chem. Soc. 1995, 117, 12015. 24. Banwell, M. ; Cameron, J. M. Tetrahedron Lett. 1996, 37, 525. 25. Wolfe, M. ; Aube, J. J. Org. Chem. 1997, 62, 654. 26. Wovkulich, P. M. In Comprehensive Organic Synthesis; Trost, B. ; Pergamon: Oxford, 1991, Vol. 1, Chap. 3. 27. Berson, J. ; Jones, M. J. Am. Chem. Soc. 1964, 86, 5017. Berson, J. ; Gajewski, J. J. J. Am. Chem. Soc. 1964, 86, 5019. 28. Reinhoudt, D. N. Adv.

1995, 117, 8275. 78. Molander, G. ; Eastwood, P. R. J. Org. Chem. 1996, 61, 1910. 79. For recent reviews and lead references on transition-metal-catalyzed cycloadditions, see Hegedus, L. S. Coord. Chem. Rev. 1997, 161, 129. Dell, C. P. Contemp. Org. Syn. 1997, 4, 87. Franhauf, H. W. Chem. Rev. 1997, 97, 523-596. ; Tam, W. Chem. Rev. 1996, 96, 49. 44 PAUL A. WENDER and JENNIFER A. LOVE 80. ; Natchus, M. ; Shuker, A. J. In TAXOL Science and Applications: M. ; CRC Press: New York, 1995, pp. 123-187.

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