Cyclization of pyrazolones: novel synthesis of pyrano, pyrido, pyrimido
and spiropyrazole derivatives

Faculty	Science	Year:	2018
Type of Publication:	ZU Hosted	Pages:
Authors:	Mohammed Juma Mohammed Aass
Journal:	Journal of the Iranian Chemical Society Springer	Volume:

Keywords :	Cyclization , pyrazolones: novel synthesis , pyrano, pyrido,
Abstract:	Depending on the reaction conditions, two alternative cyclizations are possible for [3 + 3] cyclocondensation of pyrazolone derivative 1a and ethyl cyanoacetate of type pyrano [2,3-c] pyrazol-6(1H)-one 2 and pyrano [2,3-c] pyrazol-4(1H)-on

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