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By G.W. Gribble, Thomas L. Gilchrist

This quantity of development in Heterocyclic Chemistry(PHC) is the 13th annual assessment of the literature, overlaying the paintings released on very important heterocyclic ring platforms in the course of 2000. during this quantity there are really good experiences. the 1st, by means of H. Ila, H. Junjappa and P.K. Mohanta, covers their paintings on annulation utilizing ∝-oxoketene dithioacetals, an artificial procedure that offers helpful routes to an impressively wide variety of fused heterocycles. the second one, by way 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 by means of expanding heterocycle ring dimension, evaluate contemporary advances within the box of heterocyclic chemistry with emphasis on synthesis and reactions.

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A Critical Review of the 2000 Literature Preceded by Two Chapters on Current Heterocyclic Topics

This quantity of growth in Heterocyclic Chemistry(PHC) is the 13th annual overview of the literature, masking the paintings released on vital heterocyclic ring structures in the course of 2000. during this quantity there are really expert reports. the 1st, by means of H. Ila, H. Junjappa and P. ok. Mohanta, covers their paintings on annulation utilizing ∝-oxoketene dithioacetals, an artificial process that gives worthwhile routes to an impressively wide selection of fused heterocycles.

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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. Chem. (S) 1979, 268. The Junjappa-Ila (J1) Heteroaromatic Annulation 79JCR(M)3001 81AHC171 81JOC5031 81ZC69 82JOC3027 82S203 82S693 84CHEC(4)313 84CHEC(5)274 84CHEC(6) 114 84JCS(P1)921 84TL5095 85IJC466 85S163 86JA6808 87TL3023 88TH48 88TH58 88TH99 88TL501 88TL6633 89PHC(1)l 90C406 90JCS(P1)2909 90PAC1967 90T577 90T2561 90T3703 90T4295 90T5423 90TH141 91COS(5)1065 91S889 92TL6173 93IJC(B) 1173 93JCS(P1)l 119 B-93MI257 93S241 93S245 23 A.

7 ,~. In addition, the invertomer preference of the Nbenzyl groups position them over the aromatic rings thereby ensuring that the lone pairs on the heteroatoms are concentrated within the cavity section of the molecule. F4 NBn 136 OC"=giCH2CH2OMe 135 Bn .. 9 MOLECULAR MODELLING While there are several compounds in this presentation for which X-ray structures have been determined, it was important that a knowledge of the geometry of structures could be obtained and assessed against design criteria, even prior to preparation.

S. Apparao, Apurba Dutta, H. Ila, H. Junjappa Jr. Chem. Soc. Perkin Trans 1 1984, 921. G. Singh, H. Ila, H. Junjappa, Tetrahedron Lett. i984, 25, 5095. J. N. Vishwakarma, S. Apparao, H. Ila, H. Junjappa Indian J. Chem 1985, 24B, 466. C. V. Asokan, H. Ila, H. Junjappa Synthesis 1985, 163. A. R. Katritzky, K. Akutagawa, J. Chem. Soc. 1986, 108, 6808. M. P. Balu, H. Ila, H. Junjappa, Tetrahedron Lett. 1987, 28, 3023. C. V. D. Thesis, North Eastern Hill University, Shillong, India 1988, p. 48-62. Apurba Dutta, Ph.

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