A highly chemoselective three-component cascade reaction among alcohols or thiols,
electron-deficient alkenes, and α,β-unsaturated ketones takes place under the catalysis
of triethylamine, providing densely functionalized chain products in 44–99% yields.
The transformation presumably proceeds through a sequential cascade of hetero-Michael/Michael
reactions.
Key words
multicomponent reactions - hetero-Michael addition - alcohols - thiols - alkenes -
enones