By G.W. Gribble, Thomas L. Gilchrist
This quantity of growth in Heterocyclic Chemistry(PHC) is the 13th annual assessment of the literature, protecting the paintings released on vital heterocyclic ring platforms in the course of 2000. during this quantity there are really good stories. the 1st, through H. Ila, H. Junjappa and P.K. Mohanta, covers their paintings on annulation utilizing ∝-oxoketene dithioacetals, a man-made strategy that gives priceless routes to an impressively wide selection of fused heterocycles. the second one, by means of R. N. Warrener, is at the synthesis of fused 7-azanorbornanes. The 7-azanorbornane structural unit is integrated right into a sequence of stylish polycyclic molecules with inflexible geometry.The next chapters, prepared via expanding heterocycle ring dimension, evaluate contemporary advances within the box of heterocyclic chemistry with emphasis on synthesis and reactions.
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Additional info for A Critical Review of the 2000 Literature Preceded by Two Chapters on Current Heterocyclic Topics
R. Suresh, O. Barun, H. Ila, H. Junjappa, Tetrahedron 2000, 56, 8153. 00T8153 U. K. D. Thesis, Indian Institute of Technology, Kanpur, India, 2000, p. 00TH142 142. 01JOM(624)34 H. Ila, H. Junjappa, O. Barun, J. Organomet. Chem. 2001, 624, 34. A. Roy, S. Nandi, H. Ila, H. Junjappa, Org. Lett. 2001, 3, 229. 01OL229 J. R. Suresh, U. K. Syam Kumar, H. Ila, H. Junjappa, Tetrahedron 2001, 57, 781. 01T781 94IJC501 94MI35 94TH142 25 Chapter 2 The Synthesis of Fused 7-Azanorbornanes Ronald N. 1 INTRODUCTION The medicinal value of alkaloids containing N-bridged alicyclic ring systems have been recognised for some time and exploited commercially.
E. J. Corey, R. H. K. Chen. Tetrahedron Lett. 1973, 3817. I. Shahak, Y. Sassan, Tetrahedron Lett, 1973, 4207. A. Debal, T. Cuvigny, M. Larcheveque, Synthesis 1976, 391. R. E. Gawley, Synthesis 1976, 777. S. M. S. Chauhan, H. Junjappa, Tetrahedron 1976, 32, 1779. S. M. S. Chauhan, H. Junjappa, Tetrahedron 1976, 32, 1911. R. R. Rastogi, A. Kumar, H. Ila, H. Junjappa J. Chem. Soc,. Perkin Trans 1 1978, 549. Review on Indazolone: L. Baiocchi, G. Corsi, G. Palazzo, Synthesis 1978, 633. A. Kumar, H. Junjappa, J.
This mechanism indicated that the exo-products 73 were preferred except when X and/or R are bulky, and this premise was found to hold experimentally. 5) gave mixed adducts involving TSB, indicated that such interactions might also apply. ---R Transition State B (TSB) (bent frame product) I a) X=CH2 b) X is C=CMe2 I p - 74a,b R i N E Y E endo, exo-isomer Figure 3 Transition states for the reaction of 1,3-dipole 23 with norbomadienes 74a (X=CH2) and 7-isopropylidenenorbomadiene 74b (X is C=CMe2).
A Critical Review of the 2000 Literature Preceded by Two Chapters on Current Heterocyclic Topics by G.W. Gribble, Thomas L. Gilchrist