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    • 7. 发明授权
    • Process for preparing triazines and imidazoles
    • 制备三嗪和咪唑的方法
    • US3337550A
    • 1967-08-22
    • US37182564
    • 1964-06-01
    • SHELL OIL CO
    • JOHN YATESERNEST HADDOCK
    • C07D233/68C07F9/6521
    • C07F9/65216C07D233/68
    • 1,3-Diaza heterocyclic compounds and their triphenylphosphonium halides are prepared by reacting the corresponding 2-halo-1,3-diazo compound with triphenylphosphine, and if desired contacting the resulting triphenylphosphonium halide with a base in a liquid reaction medium to replace -P(C6H5)3\sR Halwith hydrogen. Triazines and imidazoles are specified as starting materials. Examples prepare 2,4 - bis - ethylamino -, 2,4 - bis - isopropyl-amino, 2 - diethylamino - 4 - ethylamino -, 2-ethylamino - 4 - isopropylamino -, 2,4 - bis-diethylamino -, 2 - (N - 3 - chlorophenylcarb-amyl - N - ethylamino) - 4 - diethylamino - and 2 - diethylamino - 4 - methoxy - 1,3,5 - triazines and the corresponding compounds 6-substituted with P(C6H5)3\sRCl-; and 2-amino-4-p chloroanilino - 1,3,5 - triazin - 6 - yl - triphenyl-phosphonium chloride and 2-benzylthio-4-di-ethylamino chloride and 2-benzylthio-4-di-ethylamino - 1,3,5 - triazine, all of which are claimed as novel; and also 2-amino-4-p-chloroanilino - 1,3,5 - triazine, 2 - benzylthio - 4 - di-ethylamino - 1,3,5 - triazin - 6 - yl - triphenylphosphonium chloride, and 4,5-dibromoimidazole and its hydrobromide (from 2,4,5-tribromoimidazole and P(C6H5)3).