Abstract
Diastereomeric 1-(β-dimethylaminoethyl)-2,5-dimethyl-4-piperidols were synthesized and their configurations were studied. The spatial orientation of the substituents in the α, β, and γ isomers of 2,5-dimethyl-4-piperidol was established, and the stereochemistry of the reduction of 2,5-dimethyl-4-piperidone with sodium in alcohol, with lithium aluminum hydride, and by catalysis on Raney nickel was studied by PMR spectroscopy. A series of transformations at the nitrogen atom of the piperidine ring do not change the configuration of 2,5-dimethyl-4-piperidols, but the stereochemistry of the reduction of the keto group in 2,5-dimethyl-4-piperidones with lithium aluminum hydride depends markedly on the character of the substituent attached to the piperidine nitrogen.
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I. N. Nazarov, D. V. Sokolov, and V. N. Rakcheeva, Izv. Akad. Nauk SSSR, Otd. Khim. Nauk, 80 (1954).
É. A. Mistryukov, Izv. Akad. Nauk SSSR, Ser. Khim., 1826 (1965).
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1374–1378, October, 1973.
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Nikitskaya, E.S., Levkoeva, E.I., Vlasova, T.F. et al. Synthesis and configuration of diastereomeric 1-(β-dimethylaminoethyl)-2,5-dimethyl-4-plperidols. Chem Heterocycl Compd 9, 1244–1247 (1973). https://doi.org/10.1007/BF00477461
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DOI: https://doi.org/10.1007/BF00477461