Catalytic [2+2]-cycloaddition of 3,3-disubstituted cyclopropenes to norbornene and norbornadiene |
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| Authors: | Yu. V. Tomilov V. G. Bordakov N. M. Tsvetkova I. E. Dolgii O. M. Nefedov |
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| Affiliation: | (1) N. D. Zelinskii Institute of Organic Chemistry, Academy of Sciences of the USSR, Moscow |
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| Abstract: | Conclusions 3,3-Dialkyl(cycloalkyl)cyclopropenes react with norbornene and norbornadiene at –20°C in the presence of complexes of CuCl with (PhO)3P or Ph3P exclusively by [2 + 2]-cycloaddition, giving the corresponding exo,trans-tetracyclo[5.2.1.02,6.03,5]decanes (or decenes) in yields of 60–94%, the tricyclohexane cyclodimers being obtained in yields of 5–25%.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1534–1540, July, 1987. |
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