In order to demonstrate the synthetic potential of the hydroamination reaction, we synthesised a small selection of N-arylpyrrolidines/piperidines from the corresponding acetal-containing propargylic alcohols 25a-30a (Scheme 7). We were able to find suitable conditions in which the amino alcohol was selectively transformed into the pyrrolidine/piperidine by stirring overnight in CH2Cl2 with trifluoroacetic acid and NaBH4. Pleasingly, the heterocycle synthesis could be performed without the need to purify any of the intermediate amino alcohol compounds.