Abstract
A copper(I) complex-catalyzed N,N’-diarylation of diamines based on 1,3-disubstituted adamantane, using aryl iodides bearing electron-donating and electron-withdrawing substituents, was studied. In the case of 2,2’-(adamantane-1,3-diyl)ethanediamine, the optimal catalyst system is CuI—2-(isobutyryl)cyclohexanone—Cs2CO3—DMF. The highest yield of diarylation product was reached in the case of 4-methoxyiodobenzene (79%). In the case of more spatially hindered adamantane-1,3-diyldimethanamine, 1,1’-binaphthalene-2,2’-diol (BINOL) should be used, with the highest yield of the target product (84%) being reached in the reaction with iodobenzene.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1550—1555, June, 2016.
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Panchenko, S.P., Abel, A.C., Averin, A.D. et al. CuI-catalyzed N,N’-diarylation of diamines of adamantane series. Russ Chem Bull 65, 1550–1555 (2016). https://doi.org/10.1007/s11172-016-1481-1
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DOI: https://doi.org/10.1007/s11172-016-1481-1