Conclusions
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1.
The adducts of 1,3-cyclopentadiene with the esters of 1-H-2-alkyl- and 1,2-di-H-cyclopropene-3-carboxylic acids were obtained under the conditions for the hydrolytic cleavage of the trimethylsilyl groups from the esters of i-alkyl-2-(trimethylsilyl)-or 1,2-bis(trimethylsilyl)cyclopropene-3-carboxylic acids at temperatures ranging from −40 to−5°, which when saponified gave the corresponding acids. In a similar manner, 2-n-butyl-3-acetyltricyclo[3.2.1.02,4]oct-6-ene was obtained from 1-n-butyl-2-(trimethylsilyl)-3-acetylcyclopropene and cyclopentadiene.
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2.
The activity of cyclopropene compounds in the diene synthesis reaction is determined both by the nature of the substituents attached to the multiple bond of the cyclopropene and by the steric accessibility of this bond.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2592–2596, November, 1977.
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Dolgii, I.E., Okonnishnikova, G.P., Baidzhigitova, É.A. et al. Reaction of 1-h- and 1,2-di-h-cyclopropene compounds and their trimethylsilyl derivatives with 1,3-cyclopentadiene. Russ Chem Bull 26, 2401–2404 (1977). https://doi.org/10.1007/BF00958739
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DOI: https://doi.org/10.1007/BF00958739