Synthesis p. 629 - 630 (1989)
Update date:2022-08-04
Topics:
Kappe, Thomas
Kos, Carlo
The thermal condensation at 200-300 deg C of pyrazoles 1a-c with substituted diethyl malonates 2a-c or triethyl methanetricarboxylate 2d yields the 1-oxo-1H-pyrazolo-<1,2-a>pyrazol-4-ium-3-olates 3a-h.
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Doi:10.1016/j.tetasy.2004.04.034
(2004)Doi:10.1016/0040-4039(96)00554-0
(1996)Doi:10.1021/jo00323a019
(1981)Doi:10.1016/j.tet.2004.06.037
(2004)Doi:10.1021/jo00322a038
(1981)Doi:10.1021/ja00398a023
(1981)
