Organic compounds -- part of the class 532-570 series – Organic compounds – Nitrogen attached directly or indirectly to the purine ring...
Patent
1991-10-07
1993-05-25
Shah, Mukund J.
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitrogen attached directly or indirectly to the purine ring...
544286, C07D23972
Patent
active
052141446
ABSTRACT:
4-Haloquinazolines can be prepared by the halogenation of the corresponding 4-hydroxyquinazolines with a phosphoryl, thionyl or carbonyl halide in the presence of a catalytically effective amount of a N,N-dialkylformamide. The reaction is catalyzed by the addition of soluble organic halide salts.
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Anderson et al., Synthesis, 1976, 398-399.
Botta et al., Journal of Heterocyclic Chemistry, 26 (1989) 883-4.
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Amarego J. Appl. Chem. 11 pp. 70-72, (1961).
Krauss Richard C.
Krumel Karl L.
Ringer James W.
Tai Jimmy J.
DowElanco
Grumbling Matthew V.
Loertscher Kenneth L.
Mixan Craig E.
Shah Mukund J.
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