Abstract
The interaction of N-(3-oxoalkyl)carbamates, -thiocarbamates, and -dithiocarbamates with sodium borohydride has been studied. It was shown that reaction proceeds diastereoselectively, and reductive cyclization with the formation of tetrahydro-1,3-oxazin-2-ones and -thiones may occur. The tend to cyclization of the N-(3-hydroxyalkyl)carbamates, -thiocarbamates, and -dithiocarbamates formed as intermediates depends on the number of substituents in the alkyl chain.
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Fisyuk, A.S., Ryzhova, E.A. & Unkovskii, B.V. Interaction of Methyl N-(3-oxoalkyl)carbamates, S-methyl -Carbamates, and -Dithiocarbamates with Sodium Borohydride. Synthesis of Tetrahydro-1,3-oxazin-2-ones and -thiones. Chemistry of Heterocyclic Compounds 37, 597–609 (2001). https://doi.org/10.1023/A:1011660706513
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DOI: https://doi.org/10.1023/A:1011660706513