Verwendung von nicht diffundierenden Farbkupplerverbindungen zur Farbentwicklung photographischer Materialien

摘要

1,183,515. 5-Pyrazolone derivatives. EASTMAN KODAK CO. 15 May, 1967 [16 May, 1966], No. 22360/67. Heading C2C. [Also in Division G2] Non-diffusing colour couplers contain one or two 5-pyrazolone nuclei at least one of which nuclei contains in the 1-, 3-, or 4-position a substituent consisting of or containing a non-coupling phenolic group. The couplers may be of the general formula where R is a radical containing a non-coupling phenolic group, R1 is a radical containing a 5- pyrazolone nucleus, n is 1-4, m is 1 or 2, and various preferred types of compound are disclosed. 1 - { 4 - [α - (3 - t - Butyl - 4 - hydroxyphenoxy) - n - tetradecanamido] - 2,6 - dichlorophenyl} - 3 - (2,4 - dichloroanilino) - 5 - pyrazolone is prepared by reacting t-butyl hydroquinone with ethyl α - bromo - n - tetradecanoate, treating the resulting 2 - t - butyl - 4 - (α - carbethoxy - ntridecyloxy) - phenol with kOH in methyl alcohol, treating the resulting 2 - t - butyl - 4 - (α - carboxy - n - tetradecyloxy)-phenol with conc. H 2 SO 4 in acetic anhydride, reacting the resulting α-(4-acetoxy-3- t - butyl - phenoxy} - n - tetradecanoic acid with phosphorus pentachloride, reacting the resulting α - (4 - acetoxy - 3 - t - butylphenoxy) - n - tetra - decanoyl chloride with 1 - (4 - amino - 2,6 - dichlorophenyl) - 3 - (2,4 - dichloroanilino) - 5 - pyrazolone, and treating the resulting 1-{4-[α- (4 - acetoxy - 3 - t - butylphenoxy) - n - tetradecanamido] - 2,6 - dichlorophenyl} - 3 - (2,4 - dichloroanilino) - 5 - pyrazolone with NaOH in methyl alcohol. Other specified products are prepared in similar manner.