Cycloaddition of dialkylgermoles: synthesis and structures of 2,2,3,3-tetracyano-1,4,5,6-tetraphenyl-7-germanorborn-5-enes |
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| Authors: | O S Maslennikova K S Nosov V I Faustov M P Egorov O M Nefedov G G Aleksandrov I L Eremenko S E Nefedov |
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| Institution: | (1) N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 117913 Moscow, Russian Federation;(2) N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp, 117907 Moscow, Russian Federation |
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| Abstract: | Cycloaddition reactions of 1,1-dicyclopropyl-2,3,4,5-tetraphenyl-1-germacyclopentadiene (3) with dehydrobenzene, tetracyanoethylene,
cyclooctyne, or dimethyl acetylenedicarboxylate as well as of 1,1-dimethy-2,3,4,5-tetraphenyl-1-germacyclopentadiene (4) and 2,3,4,5-tetraphenyl-1-germacyclopentadiene (5) with tetracyanoethylene or cyclooctyne were studied. Diels—Alder adducts of germoles3, 4, and5 with tetracyanoethylene were prepared. The structures of these adducts were established by X-ray diffraction analysis and
their thermal and photochemical stabilities were examined.
Published inIzvestiya Akademii Nauk, Seriya Khimicheskaya, No. 7, pp. 1278–1284, July, 2000. |
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| Keywords: | germoles 7-germanorbornenes Diels— Alder reaction germylene precursors structure thermolysis photolysis |
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