Again we examined the reaction with a series of different aryl amines on substrate 1a, and explored the functional group tolerance with respect to the propargylic alcohol component using aniline as the nucleophile (Scheme 5). Although the reaction proved to be tolerant of both electron-deficient and electron-rich anilines (1ca-1ch), only primary and secondary propargylic alcohols were suitable substrates. Tertiary and benzylic alcohols did not undergo Michael additions and only the corresponding enones were obtained.