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Imidazo[4,5-f]quinazolines: (a) Morrice, A. G.; Sprecker, M. A.; Leonard, N. J. J. Org. Chem. 1975, 40, 363-366. (b) Schneller, S. W.; Ibay, A. C. J. Org. Chem. 1986, 51, 4067-4070. Imidazo[4,5-h]-quinazolines: (c) ref 2a.
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Morrice, A.G.1
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0001228212
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Imidazo[4,5-f]quinazolines: (a) Morrice, A. G.; Sprecker, M. A.; Leonard, N. J. J. Org. Chem. 1975, 40, 363-366. (b) Schneller, S. W.; Ibay, A. C. J. Org. Chem. 1986, 51, 4067-4070. Imidazo[4,5-h]-quinazolines: (c) ref 2a.
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Schneller, S.W.1
Ibay, A.C.2
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Imidazo[4,5-h]-quinazolines: (c) ref 2a
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Imidazo[4,5-f]quinazolines: (a) Morrice, A. G.; Sprecker, M. A.; Leonard, N. J. J. Org. Chem. 1975, 40, 363-366. (b) Schneller, S. W.; Ibay, A. C. J. Org. Chem. 1986, 51, 4067-4070. Imidazo[4,5-h]-quinazolines: (c) ref 2a.
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Pyrazolo[3,4-g]quinazolines: (a) Lichtenthaler, F. W.; Moser, A. Tetrahedron Lett. 1981, 22, 4397-4400. Pyrazolo[4,3-g]quinazolines: (b) Foster, R. H.; Leonard, N. J. J. Org. Chem. 1979, 44, 4609-4611. (c) Cuny, E.; Lichtenthaler, F. W.; Moser, A. Tetrahedron Lett. 1980, 21, 3029-3032. (d) Cuny, E.; Lichtenthaler, F. W.; Jahn, U. Chem. Ber. 1981, 114, 1624-1635.
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Pyrazolo[3,4-g]quinazolines: (a) Lichtenthaler, F. W.; Moser, A. Tetrahedron Lett. 1981, 22, 4397-4400. Pyrazolo[4,3-g]quinazolines: (b) Foster, R. H.; Leonard, N. J. J. Org. Chem. 1979, 44, 4609-4611. (c) Cuny, E.; Lichtenthaler, F. W.; Moser, A. Tetrahedron Lett. 1980, 21, 3029-3032. (d) Cuny, E.; Lichtenthaler, F. W.; Jahn, U. Chem. Ber. 1981, 114, 1624-1635.
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Foster, R.H.1
Leonard, N.J.2
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0019144476
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Pyrazolo[3,4-g]quinazolines: (a) Lichtenthaler, F. W.; Moser, A. Tetrahedron Lett. 1981, 22, 4397-4400. Pyrazolo[4,3-g]quinazolines: (b) Foster, R. H.; Leonard, N. J. J. Org. Chem. 1979, 44, 4609-4611. (c) Cuny, E.; Lichtenthaler, F. W.; Moser, A. Tetrahedron Lett. 1980, 21, 3029-3032. (d) Cuny, E.; Lichtenthaler, F. W.; Jahn, U. Chem. Ber. 1981, 114, 1624-1635.
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Cuny, E.1
Lichtenthaler, F.W.2
Moser, A.3
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11
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0019511608
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Pyrazolo[3,4-g]quinazolines: (a) Lichtenthaler, F. W.; Moser, A. Tetrahedron Lett. 1981, 22, 4397-4400. Pyrazolo[4,3-g]quinazolines: (b) Foster, R. H.; Leonard, N. J. J. Org. Chem. 1979, 44, 4609-4611. (c) Cuny, E.; Lichtenthaler, F. W.; Moser, A. Tetrahedron Lett. 1980, 21, 3029-3032. (d) Cuny, E.; Lichtenthaler, F. W.; Jahn, U. Chem. Ber. 1981, 114, 1624-1635.
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Cuny, E.1
Lichtenthaler, F.W.2
Jahn, U.3
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12
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0345650424
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Pyrazolo[3,4-h]quinazolines: (a) ref 3a
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Pyrazolo[3,4-h]quinazolines: (a) ref 3a; Pyrazolo[4,3-f]-quinazolines: (b) ref 3d; Pyrazolo[3,4-f]quinazolines: (c) ref 3c. (d) Foster, R. H.; Leonard, N. J. J. Org. Chem. 1980, 45, 3072-3077. (e) Lichtenthaler, F. W.; Cuny, E. Heterocycles 1981, 15, 1053-1059.
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13
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0345650424
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Pyrazolo[4,3-f]-quinazolines: (b) ref 3d
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Pyrazolo[3,4-h]quinazolines: (a) ref 3a; Pyrazolo[4,3-f]-quinazolines: (b) ref 3d; Pyrazolo[3,4-f]quinazolines: (c) ref 3c. (d) Foster, R. H.; Leonard, N. J. J. Org. Chem. 1980, 45, 3072-3077. (e) Lichtenthaler, F. W.; Cuny, E. Heterocycles 1981, 15, 1053-1059.
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14
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0345650424
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Pyrazolo[3,4-f]quinazolines: (c) ref 3c.
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Pyrazolo[3,4-h]quinazolines: (a) ref 3a; Pyrazolo[4,3-f]-quinazolines: (b) ref 3d; Pyrazolo[3,4-f]quinazolines: (c) ref 3c. (d) Foster, R. H.; Leonard, N. J. J. Org. Chem. 1980, 45, 3072-3077. (e) Lichtenthaler, F. W.; Cuny, E. Heterocycles 1981, 15, 1053-1059.
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Pyrazolo[3,4-h]quinazolines: (a) ref 3a; Pyrazolo[4,3-f]-quinazolines: (b) ref 3d; Pyrazolo[3,4-f]quinazolines: (c) ref 3c. (d) Foster, R. H.; Leonard, N. J. J. Org. Chem. 1980, 45, 3072-3077. (e) Lichtenthaler, F. W.; Cuny, E. Heterocycles 1981, 15, 1053-1059.
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27
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13344287692
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note
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13C NMR spectrum, there are additional resonances at δ 132.96, 122.93, 100.02, 59.64 and 16.26. The 132.96 and 100.02 signals are the most prominent, and correspond to CH carbons from the DEPT spectrum. Therefore, they most likely correspond to C-2 and C-3, respectively, of 18.
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28
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13344254761
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Katritzky, A. R., Ed.; Academic: New York
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Albert, A. In Advances in Heterocyclic Chemistry; Katritzky, A. R., Ed.; Academic: New York, 1982; Vol 32, pp 1-81.
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Albert, A.1
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0000600674
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Katritzky, A. R., Boulton, A J., Eds.; Academic: New York
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Irwin, W. J.; Wibberley, D. G. In Advances in Heterocyclic Chemistry; Katritzky, A. R., Boulton, A J., Eds.; Academic: New York, 1969; Vol 10, pp 149-198.
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Advances in Heterocyclic Chemistry
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Irwin, W.J.1
Wibberley, D.G.2
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31
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13344264900
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Piskov, V. B.; Osanova, L. K.: Koblova, I. A. Zh. Org. Khim. 1970, 6, 559-564; Chem. Abstr. 1970, 72, 132251d.
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Piskov, V.B.1
Osanova, L.K.2
Koblova, I.A.3
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32
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13344254763
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Piskov, V. B.; Osanova, L. K.: Koblova, I. A. Zh. Org. Khim. 1970, 6, 559-564; Chem. Abstr. 1970, 72, 132251d.
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33
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13344253998
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note
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It is imperative to use pure (tert-butyloxy)bis(dimethylamino)-methane in this reaction. In one run utilizing old reagent, the reaction did not proceed cleanly. Attempted purification of crude 20 by column chromatography resulted in significant decomposition, in part to amide 21.
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36
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3142757310
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(c) Zn/HOAc: Glushkov, R. G.; Volskova, V. A.; Magidson, O. Y. Khim.-Farm. Zh. 1967, 1, 25-32; Chem. Abstr. 1968, 68, 105143f.
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Glushkov, R.G.1
Volskova, V.A.2
Magidson, O.Y.3
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37
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13344265208
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(c) Zn/HOAc: Glushkov, R. G.; Volskova, V. A.; Magidson, O. Y. Khim.-Farm. Zh. 1967, 1, 25-32; Chem. Abstr. 1968, 68, 105143f.
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Chem. Abstr.
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38
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0010388044
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Hengartner, U.; Batcho, A. D.; Blount, J. F.; Leimgruber, W.; Larscheid, M. E.; Scott, J. W. J. Org. Chem. 1979, 44, 3748-3752.
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Hengartner, U.1
Batcho, A.D.2
Blount, J.F.3
Leimgruber, W.4
Larscheid, M.E.5
Scott, J.W.6
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39
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13344268223
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note
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-, 40), 175 (100), 174 (43).
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