Method for preparation of N-pyrazolylamidoximes

Details Method for preparation of N-pyrazolylamidoximes Method for preparation of N-pyrazolylamidoximes

2007-09-11

2007-09-11

Shameem, Golam M. M. (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C548S125000, C548S131000, C548S356100, C548S371400

Reexamination Certificate

active

10954875

ABSTRACT:
A method for the preparation of N-pyrazolylamidoximes of the general formula IR1and R2independently represent an alkyl, aryl, or heteroaryl group, comprisesreacting a 5-(β-ketoalkyl)-3-substituted-1,2,4-oxadiazoles of the general formula IIwith hydrazine.

REFERENCES:
patent: 626470 (1949-07-01), None
Merckx, Raymond, 1,2,4-Oxidiazole derivatives, Bulletin des Societes Chimiqus Belges (1949), pp. 58-65 with abstract.
Harry L. Yale, et al., “3,5-Disubstituted-1,2,4-oxadiazoles and 4,5-Dihydro-3,5-disubstituted-1,2,4-oxadiazoles”, J. Heterocyclic Chem., vol. 15, 1978, pp. 1373-1378.

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