Synthesis,electronic structure,and physicochemical characteristics of pyrazolo[1,2-a]pyridazinium |
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| Authors: | V N Voshula Yu B Vysotskii V I Seraya N T Novikova R Ya Mushii V I Dulenko |
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| Institution: | (1) Institute of Physical Organic Chemistry and Coal-Tar Chemistry, Academy of Sciences of the Ukrainian SSR, 340114 Donetsk |
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| Abstract: | The interaction of 1-methallylpyrazoles with acetic or propionic anhydride in the presence of perchloric acid forms products of acylation at the double bond and subsequent heterocyclization — pyrazolo1,2-a]pyridazinium salts — that are representatives of a new heteroaromatic system. Analogous cyclization is observed in the acylation of 3-(2-hydroxy-2-methylpropyl-pyrazole.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1623–1631, December, 1990. |
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