| abstract |
PURPOSE: To prepare the titled compound useful as a precursor of the dye for pressure-sensitive copying material, etc. in high yield, in an industrial scale, without using a particular anticorrosion reaction apparatus, by reacting a specific 3,6-bis-arylaminofluoran derivative with an arylating agent. n CONSTITUTION: The objective compound of formula II (Ar 1 , Ar 2 and Ar 3 are aryl; R 1 , R 2 and R 3 are alkyl, alkoxy, halogen, nitro, amino, etc.; x and y are 0 or integer 1W3; z is 0 or integer 1W4) is prepared by reacting a 3,6-bis-arylaminofluoran derivative of formulaI(e.g. 3,6-bis-diphenylaminofluoran) with an arylating agent of formula Ar 3 -X (X is halogen or sulfonyloxy) (e.g. iodobenzene). n COPYRIGHT: (C)1982,JPO&Japio |