Abstract
N-{2-[(1-R-Cyclopropyl)methyl]prop-2-enyl}-N,N-dimethylamines were prepared in 80-90% yields by the reaction (5 h, 23-25 C) of propargylamines R-C=C-CH2NMe2 (where R = alkyl, Ph) with a system of reactants CH2I2-Et3Al taken in the molar ratio [propargylamine]: [Et3Al]: [CH2I2] = 1: 6: 6. In the case of phenyl-substituted propargyl- amine, N-({1-[(1-phenylcyclopropyl)methyl]cyclopropyl}methyl)-N,N-dimethylamine is selectively formed in 76% yield upon the elongation of the reaction time to 4 days.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1623–1625, August, 2010.
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Ramazanov, I.R., Yaroslavova, A.V., Khalilov, L.M. et al. An unusual reaction of propargylamines with CH2I2 and Et3Al. Russ Chem Bull 59, 1668–1670 (2010). https://doi.org/10.1007/s11172-010-0293-y
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DOI: https://doi.org/10.1007/s11172-010-0293-y