Abstract
The reactions of 2-methylimidazoline with excess benzoyl chlorides
under mild conditions generated N ,N ′-diacyl-β-keto cyclic
ketene-N ,N ′-acetals.
Conversely, the corresponding reactions of 1,2-dimethylimidazoline
under the same conditions stereoselectively formed the ring-opened
(Z )-vinyl benzoates. The latter reactions
feature the formation of carbon-carbon bonds, carbon-nitrogen
bonds, and carbon-oxygen bonds in one sequential cascade.
Key words
acyl ketene-N ,N ′-acetal - carbon-carbon bond formation - 2-methylimidazoline - 1,2-dimethylimidazoline
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