Advances in Heterocyclic Chemistry, Vol. 24 by A.R. Katritzky

By A.R. Katritzky

(from preface)This quantity makes an important contribution to the method of up-dating prior volumes that we have got initiated. Seven of the 9 chapters are dedicated to this objective and any more we intend to up-date chapters from 10 to fifteen years after their visual appeal, only if huge paintings has been conducted within the quarter covered.Five chapters were up-dated by way of the authors of the unique chapters that seemed in past volumes, as follows: Quinazolines, by way of W. L. F. Armarego (the unique bankruptcy seemed in quantity 1), 3-membered earrings with Heteroatoms, by way of E. Schmitz (Volume 2), Physicochemical elements of Purines, through J. H. Lister (Volume 6), Reis-sert Compounds, by way of F. D. Popp (Volume 9), and Pyridazines, by way of M. Tiffler and B. Stanovnik (Volume 9).Two different chapters up-date topics coated in previous volumes, yet by way of diverse authors: Selenium-Nitrogen Heterocycles, by means of I. Lalezari, A. Shafiee, and M. Yalpani, which up-dates the contribution by way of Bulka in quantity 2 on Selenazole Chemistry, and Pyrrolizidines, by way of D. J. Robins, which up-dates the contribution via Kochetkov and Likhosherstov in quantity 5.Finally, chapters care for considerably new issues: Benzo[c]cin-nolines, through J. W. Barton, and 1, 4-Thiazines, via R. J. Stoodley.

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Extra resources for Advances in Heterocyclic Chemistry, Vol. 24

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Murray, J. Org. Chem. 42,200 (1977). 94 A. Mendel, J. Heierocycl. Chem. 14, 153 (1977). 95 G. M. Coppola, G. E. Hardtmann, and 0. R. Hster, J. Org. Chem. 41, 825 (1976). 96 G. E. Patent 3936,453 (1976) [ C A 84, 164832 (1976)l. 91 92 Sec. D] 19 QUINAZOLINES whole process was not clear. ~~” + 0 0 D. QUINAZOLINE-2,4-DIONES The cyclization of o-ureidobenzoic esters to quinazoline-2,4-diones and 4-one-2-thiones, respectively, in aqueous alkali proceeded equally well with the N-hydroxy urea (X = 0)and thiourea (X = S)esters 28.

Coppola, G. E. Hardtmann, and 0. R. Hster, J. Org. Chem. 41, 825 (1976). 96 G. E. Patent 3936,453 (1976) [ C A 84, 164832 (1976)l. 91 92 Sec. D] 19 QUINAZOLINES whole process was not clear. ~~” + 0 0 D. QUINAZOLINE-2,4-DIONES The cyclization of o-ureidobenzoic esters to quinazoline-2,4-diones and 4-one-2-thiones, respectively, in aqueous alkali proceeded equally well with the N-hydroxy urea (X = 0)and thiourea (X = S)esters 28. 98Ethyl o-hydroxyaminobenzoate reacted with two molecular equivalents of methylisocyanate in ethanolic alkali and gave 3-methyl-1-methylaminocarbonyloxyquinazoline-2,4-dione.

M. Acheson, Adv. Heterocycl. Chrm. 1, 125 (1963); R. M. Acheson and N. F. Elmore, Adt. Hrterocycl. Chem. 23. 263 ( 1 978). R. M. Acheson, M. W. Foxton, and J. K. Stubbs, J. Chem. C, 926 (1968); R. M. Acheson and G. Procter, J . C . S. Perkin I , 1924 (1977). P. J. Abbott, R. M. Acheson, M. Y . Kornilov, and J. K. Stubbs, J . C . S. Perkin I, 2322(1975). W. L. F. Armarego, "Stereochemistry of Heterocyclic Compounds. Part 1. Nitrogen Heterocycles," p. 205. Wiley (Interscience), New York, 1977. R.

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