An approach to 2-cyanopyrrolidines bearing a chiral auxiliary

Add time:09/02/2019    Source:sciencedirect.com

The reaction of 2-methyl-2-((1-phenylethyl)amino)propanenitrile with different γ-halocarbonyl compounds is investigated. The influence of different parameters such as the nature of the substrate and solvent, is discussed. The reaction is considered as a convenient route to 2-cyanopyrrolidines in the case of aliphatic γ-halocarbonyl compounds possessing a reasonably reactive carbonyl group. In many cases, the products can be obtained as single enantiomers. It is shown that cyclopropyl ketones can also react with 2-methyl-2-((1-phenylethyl)amino)propanenitrile to give 2-cyanopyrrolidines. A mechanistic scheme is proposed in order to explain the experimental facts observed.

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