Synthesis and structures of ethoxymethylene derivatives of 1,3-diethoxycyclohexenylium perchlorate |
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| Authors: | E P Olekhnovich I V Korobka O Ya Borbulevych A B Larionov A V Chernoivanov O V Shishkin V G Arsen ev L P Olekhnovich |
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| Institution: | (1) Research Institute of Physical and Organic Chemistry of Rostov State University, 194/2 prosp. Stachki, 344090 Rostov-on-Don, Russian Federation;(2) Department of Chemistry, Rostov State University, 7 ul. Zorge, 344090 Rostov-on-Don, Russian Federation;(3) A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 117813 Moscow, Russian Federation;(4) Institute of Single Crystals of the National Academy of Sciences of the Ukraine, 60 prosp. Lenina, 310001 Khar'kov, Ukraine |
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| Abstract: | 1,3-Diethoxy-4,6-di(ethoxymethylene)-5,5-dimethylcyclohexenylium perchlorate (6a) was synthesized from 1,3-diethoxy-5,5-dimethylcyclohexenylium perchlorate by successive introduction of ethoxymethylene
groups. Perchlorate6a was also obtained from dimedone in one preparative step. Compound6a was studied by X-ray diffraction analysis. The bond lengths in the fragment containing the C(1)–C(4) and C(6) atoms of the
six-membered ring of the cation are substantially equalized and close to the Carom-Carom bond length. Apparently, this fact indicates that the positive charge is primarily delocalized over the aromatic system.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2300–2304, November, 1998. |
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| Keywords: | 1 3-diethoxy-4-ethoxymethylene-5 5-dimethylcyclohexenylium perchlorate 1 3-diethoxy-4 6-di(ethoxymethylene)-5 5-dimethylcyclohexenylium perchlorate 1 3-diethoxy-4 6-di(ethoxymethylene)cyclohexenylium perchlorate molecular structure crystal structure organic synthesis X-ray diffraction study |
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