| 摘要 |
PURPOSE:A new compound useful for a guanine indicator, etc. CONSTITUTION:A compound of formula I [R<1>, R<2> are alkyl; R<3> is (substituted) alkyl; R<4> is H, alkyl, acyl; =X-is :=H-. =N-; Y is O. S; A is (substituted) hydrocarbyl aromatic ring], e.g. a compound of formula II. The compound of formula I is obtained by reacting a compound of formula III (X<-> is monovalent anion) with a compound of formula IV in a solvent such as methyl chloride or chloroform at -20 to 100 deg.C. |
