A regioselective synthesis of 5-pyrazolones and pyrazoles from phosphazenes derived from hydrazines and acetylenic esters

DOI: 10.1016/S0040-4020(99)00890-X

Source and publish data:

Tetrahedron p. 14451 - 14458 (1999)

Update date:2022-08-05

Topics:

Authors:

Palacios, Francisco

Ochoa De Retana, Ana M.

Pagalday, Jaione

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Article abstract of DOI:10.1016/S0040-4020(99)00890-X

Efficient and regioselective syntheses of 1-phenyl-5-pyrazolones substituted with a phosphoranylidene group in the 3-position and of 3- alkoxycarbonyl-5-methoxy-1-phenyl pyrazoles are described. The key step is the formation of functionalized hydrazones b

Full text of DOI:10.1016/S0040-4020(99)00890-X

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