Advances in Heterocyclic Chemistry, Vol. 34 by Alan R. Katritzky (ed.)

By Alan R. Katritzky (ed.)

Meant for natural chemists, this quantity follows the layout of past volumes and gives up to date details on chosen parts of heterocyclic chemistry.

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G . Hamon and L. J. S. Chem. , 1330 (1970). G . , 1665 (1963). 'I4 M. Lempert-Srtter and K. Lempert, Tetrahedron 31, 1677 (1975). 'I' S. D. Andrews, A. C. Day, and R. N. Inwood, J. Chem. SOC. C , 2443 (1969). 'I6 P. Bouchet, J. Elguero, R. Jacquier, and F. Forissier, C. R. Acad. , Ser. C 269, 570 (1 969). C. Wentrup and W. D. Crow, Tetrahedron 27, 361 (1971). 'I3 Sec. G] 23 THE 3H-PYRAZOLES 1 (73) SCHEME 27 G . METHODSFOR N-OXIDES 1. N-Oxides a. By Oxidation of 3H-Pyrazoles. '08 Ph 53 CF3C03H+ Ph M e p N Me +Ny Ph Ph not M e Z N < , - I Me -0 (75) (76) SCHEME 28 b.

58 . 59 . 59 . 60 . 61 . 62 . 62 . 64 . 64 . 65 . 65 . 65 . 65 . 65 . 65 . 66 . 67 . . . . 67 . . . . 68 68 68 68 . . . . . . . . . . . . Copyrighl @ 1983 by Academic Press. Inc . All rights of reproduction in any form reserved. ISBN-0- 12-020634-X 54 MICHAEL P. SAMMES AND ALAN R. KATRITZKY 1. Migration of 4-Substituent . . . . . 2. Cope Rearrangements . . . . . . 3. Rearrangements of Salts . . . . . . Photochemical Reactions Formally Involving No Other Species ReactionsofRingAtomswithElectrophiles .

3 . 4 Me, ,CO,Me ~~ DAP Me M< 'N' 61% H M e E N M'~ ' N 85% (69) SCHEME 25 F. MISCELLANEOUS METHODS 1. PNMe Me "' Giz Meo KOH e 53% (72) (71) SCHEME 26 2 . "' D. P. G . Hamon and L. J. S. Chem. , 1330 (1970). G . , 1665 (1963). 'I4 M. Lempert-Srtter and K. Lempert, Tetrahedron 31, 1677 (1975). 'I' S. D. Andrews, A. C. Day, and R. N. Inwood, J. Chem. SOC. C , 2443 (1969). 'I6 P. Bouchet, J. Elguero, R. Jacquier, and F. Forissier, C. R. Acad. , Ser. C 269, 570 (1 969). C. Wentrup and W. D. Crow, Tetrahedron 27, 361 (1971).

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