Chemical Addresses Delivered at the Second Decennial Celebration of Clark University; In September, 1909

Chemical Addresses Delivered at the Second Decennial Celebration of Clark University; In September, 1909

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911 edition. Excerpt: ...salts of nitroacylanthranilic acids,6 and by the action of primary amines on nitroacetoanthranils.7 The last is a very fine method indeed, and one we have developed quite extensively. 1 Bogert and Hand, This Journal, 24, 1031 (1902). 1 J. prakt. Chem., 2 31, 124 (1885); 36, 141 (1887). 3 Bogert and Hoffman, This Journal, 27, 1293 (1905). 4 Bogert and Hand, Ibid., 25, 943 (1903); 28, 94 (1906). 5 Niementovskii, /. prakt. Chem., 2 51, 564 (1895). 6 Bischler and Burkart, Bcr., 26, 1349 (1893). 7 Anschutz, Schmidt and Griffenberg, Ber., 35, 3480 (1902). By these various methods, we prepared 5-nitro-,1 6-nitro-2, and 7-nitro4-quinazolones.3 Of the four possible types of benzoylnitroquinazolines, representatives of the 6-nitro,4 and 8-nitro,5 were already known. The preparation of the 5-and y-nitro derivatives completed the series. Reduction of the nitroquinazolines yielded the corresponding benzoylaminoquinazolines,8 in which, as might have been expected, the amino group shows the usual aniline reactions. Aminoquinazolines with the amino group on the miazine side of the nucleus were produced by condensing simple or substituted acylanthranils with primary hydrazines,7.N.COR, N = CR H.N.NHR' = C6H/ + H, O. O CO. N.NHR' With hydrazine itself, it was also found possible to condense two molecules of the anthranil with one of the hydrazine, thereby giving 3,3'diquinazolonyls, --Ci RC = Nv C6H4. X). N-N.CCK The same result can be accomplished, though less satisfactorily, by condensing the 3-aminoquinazoline with a second molecule of the anthranil. The di-quinazolonyls so far isolated are all very difficultly soluble and inert. The 3-aminoquinazolines proved interesting because of their unsymmetrical secondary hydrazine structure, N.NH2. In the main, their...show more

Product details

  • Paperback | 74 pages
  • 189 x 246 x 4mm | 150g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236617754
  • 9781236617750