4-Piperidino-5-oxo-2-pyrazolines

Details 4-Piperidino-5-oxo-2-pyrazolines 4-Piperidino-5-oxo-2-pyrazolines

1975-08-22

1977-05-03

Jiles, Henry R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

26029362, 26029367, 26029368, 260310A, 260295R, 2602948D, 2602948R, 260295E, 260296R, 96 565, 96100, 260283SA, 260283S, 260289R, 260288R, 260287R, 260283R, C07D40104

Patent

active

040214281

ABSTRACT:
4-Piperidino-5-oxo-2-pyrazoline represented by the following general formula (X); ##STR1## wherein R.sub.1 represents a group having about 6 to about 40 carbon atoms, R.sub.2 represents a hydrogen atom or a group having 0 to about 45 carbon atoms, R.sub.3, R.sub.4 and R.sub.5 each represents a hydrogen atom or a group having 0 to 20 carbon atoms, and R.sub.3 and R.sub.4 may combine to form an aliphatic ring, an aromatic ring or a heterocyclic ring. The 4-piperidino-5-oxo-pyrazolines are useful as magenta color couplers.

REFERENCES:
patent: 2506654 (1950-05-01), Stein et al.
patent: 3320253 (1967-05-01), Muhle
patent: 3519429 (1970-07-01), Lestina
Heterocycle Compounds, ed. Elderfield (1950), vol. 1, pp. 631-634.
C.A. 58: 7921(b), (1963), Kurihara et al.

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