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- W2028298768 abstract "The mono-aroylhydrazones of benzil are cyclised by ammonium acetate in hot acetic acid to tri-substituted-1:2:4-triazines. The yield is favourable and it is not necessary, or even advantageous, to isolate the presumed intermediates. The new synthesis has been applied to a sufficient range of examples to establish its status as a general method. In the case of phenanthraquinone the reaction took a more complex course and probably involved two molecules of the diketone. A rational synthesis of kyaphenine (2:4:6-triphenyl-1:3:5-triazine) has been effected by reaction of 2-chloro-4:6-diphenyl-1:3:5-triazine with phenylmagnesium bromide and a similar method served to synthesise 5:6-diphenyl-3-p-tolyl-1:2:4-triazine also made from benzil and p-toluylhydrazide. Both kyaphenine and its isomeride in the asymm-triazine series afford lophine on reduction, and the mechanism of the long-known former reaction (Radziszewski) is discussed." @default.
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- W2028298768 date "1957-01-01" @default.
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- W2028298768 title "Studies in the triazine series including a new synthesis of 1:2:4-triazines" @default.
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- W2028298768 doi "https://doi.org/10.1016/0040-4020(57)85014-5" @default.
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