Conclusions
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1.
The oligomerization of isoprene was studied in the presence of nickel complexes activated by o- and m-borates.
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2.
The borates, in contrast to phosphorus-containing activators, direct the reaction primarily towards the formation of linear trimers and tetramers of isoprene, namely, 3-methylene-7,11-dimethyl-1-trans-6,11-dodecatriene, 2,6,10-trimethyl-1-trans-3,5,10-dodecatriene, and 2,6,10,14-tetramethyl-1-trans-3,6,10,14-hexadecapentane.
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Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 3, pp. 553–557, March, 1979.
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Dzhemilev, U.M., Latypov, G.M., Tolstikov, G.A. et al. Production of regular, linear isoprene oligomers in the presence of nickel-containing homogeneous catalysts. Russ Chem Bull 28, 509–512 (1979). https://doi.org/10.1007/BF00924822
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DOI: https://doi.org/10.1007/BF00924822