Formation of benzofuran and 2H-chromene structures in one reaction. A novel synthesis of 2H-chromene derivatives |
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| Authors: | L. Yu. Ukhin Zh. I. Orlova O. Y. Shishkin Yu. T. Struchkov |
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| Affiliation: | (1) Institute of Physical and Organic Chemistry at Rostov State University, 194/3 prosy. Stachki, 344771 Rostov-on-Don, Russian Federation;(2) Russian Academy of Sciences, A. N. Nesmeyanbv Institute of Organoelement Compounds, 28 ul. vavilova, 117813 Moscow, Russian Federation |
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| Abstract: | ![]()
Heating the morpholinal of nitrosalicylic aldehyde with methyl propiolate in acetonitrile in the presence of Cul affords an equimolar mixture of 2-methoxycarbonylmethyl-3-morpholino-5-nitrobenzofuran and 3-methoxycarbonyl-2-morpholino-6-nitro-2H-chromene, the structures of which were determined by X-ray analysis. Only the 2H-chromene mentioned above was obtained in the absence of Cul and solvent.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 1222–1228, May, 1996. |
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| Keywords: | nitrosalicylic aldehydes aminals methyl propiolate interaction 2-methylcarbonylacetylene 2-methoxycarbonylmethyl-3-morpholino-5-nitrobenzofuran derivatives of the 2H-chromene X-ray analysis |
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