6-Substituted-3-amino-1,2,4-triazine類の一新合成法

抄録

3-Amino-6-[2-(5-nitro-2-furyl) vinyl)-1, 2, 4-triazine (II) was conveniently prepared in a yield of up to 66% by an oxidative cyclization of 4-(5-nitro-2-furyl)-3-buten-2-one amidinohydrazone (I) with H₂SeO₃(SeO₂), H₂SeO₄, or their alkali metal salts. The same procedure was successfully applied for the synthesis of 6-substituted-3-amino-1, 2, 4-triazines shown in Table II.