Conclusions
In the presence of secondary amines, nickel complexes with chiral phosphorus-containing ligands catalyze the asymmetric cyclodimerization of butadiene to 4-ethyl-1-cyclohexene and 4-vinyl-1-cyclohexene.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 6, pp. 1324–1327, June, 1980.
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Dzhemilev, U.M., Fakhretdinov, R.N., Telin, A.G. et al. Cyclodimerization of butadiene in presence of secondary amines and catalyzed by chiral nickel complexes. Russ Chem Bull 29, 944–947 (1980). https://doi.org/10.1007/BF00958813
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DOI: https://doi.org/10.1007/BF00958813