3-(1-R-2-R1-5/6-Y-indol-3-yl)-3-(2-R2-4-N-R3-N-R4-aminophenyl)-X-phthalides,7-(1-R-2-R1-5/6-Y-indol-3-yl)-7-(2-R2-4-N-R3-N-R4-aminophenyl)furo[3,4b]-pyridine-5(7H)-ones and 5-(1-R-2-R1-5/6-Y-indol-3-yl)-5-(2-R2-4-N-R3-N-R4-aminophenyl)furo[3,4b]-pyridine-7(5H)-ones are useful as color formers in transfer imaging systems, pressure-sensitive carbonless duplicating systems and thermal-responsive marking systems. The phthalides are prepared by the interaction of the corresponding 2-(1-R-2-R1-5/6-Y-indol-3-yl)carbonyl-X-benzoic acid with the corresponding 3-R2-N-R3-N-R4-aniline or the interaction of the corresponding 2-(2-R2-4-N-R3-N-R4-aminophenyl)carbonyl-X-benzoic acid with the corresponding 1-R-2-R1-5/6-Y-indole. The furopyridines are prepared by the interaction of the corresponding 2/3-(1-R-2-R1-5/6-Y-indol-3-yl)carbonylpyridine-3/2-carboxylic acid with the corresponding 3-R2-N-R3-N-R4-aniline. The novel 1-R-2-R1-5/6-Y-indol-3-yl)carbonyl-X-benzoic acids and 1-R-2-R1-5/6-Y-indoles are useful as intermediates to the appropriate phthalides and furopyridinones.
3-(1-R-2-R1-5/6-Y-indol-3-yl)-3-(2-R2-4-N-R3-N-R4-aminophenyl)-X-phthalides,7-(1-R-2-R1-5/6-Y-indol-3-yl)-7-(2-R2-4-N-R3-N-R4-aminophenyl)furo[3,4b]-pyridine-5(7H)-ones and 5-(1-R-2-R1-5/6-Y-indol-3-yl)-5-(2-R2-4-N-R3-N-R4-aminophenyl)furo[3,4b]-
吡啶-7(5H)-酮可用作转印成像系统、压敏无碳复写系统和热敏打标系统中的
显色剂。
邻苯二甲酸盐是通过相应的 2-(1-R-2-R1-5/6-Y-
吲哚-3-基)羰基-X-
苯甲酸与相应的 3-R2-N-R3-N-R4-
苯胺的相互作用或相应的 2-(2-R2-4-N-R3-N-R4-
氨基苯基)羰基-X-
苯甲酸与相应的 1-R-2-R1-5/6-Y-
吲哚的相互作用制备的。相应的 2/3-(1-R-2-R1-5/6-Y-
吲哚-3-基)羰基
吡啶-3/2-
羧酸与相应的 3-R2-N-R3-N-R4-
苯胺相互作用,制备出
呋喃吡啶。新型 1-R-2-R1-5/6-Y-
吲哚-3-基)羰基-X-
苯甲酸和 1-R-2-R1-5/6-Y-
吲哚可用作适当
邻苯二甲酸盐和
呋喃吡啶酮的中间体。