Cyclopropanation of Enoates with Phenacyl Halides

Gaunt et al. recently reported that tertiary amines such as DABCO catalyze the reaction of enoates, enones, enals, a,/funsaturated amides, nitriles, and sulfones 

The Michael addition of N-nucleophiles to a./ -unsaturated carbonyl compounds is of obvious synthetic importance, e.g. for the preparation of / -amino acids [50a]. Several metal-containing catalysts have been devised, e.g. the chiral Al-salen 

P—Azido imides prepared by addition of TMS-N3 to a, 3-unsaturated (E)-imides, catalyzed by 2.5 mol-% of the peptide catalyts 65 and 66  

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