[reaction: see text] Chloral or its hydrate undergoes the carbon-carbon bond-formation reaction with various optically active imines in the absence of any additive, followed by hydrolysis, to produce the corresponding beta-trichloromethyl-beta-hydroxy ketones in good yields with high enantioselectivities. In addition, the products with higher ee values were obtained by a simple recrystallization process
A novel preparation of the potent CERT protein inhibitor (1R,3S)-HPA-12 is described. The synthesis is accomplished in five steps from (S)-Wynberg lactone and features a diastereoselective tandem Corey-Link and intramolecular nucleophilic acyl substitution reaction in a key step.
Facile synthesis of (S)-β-hydroxy-β-trichloromethylated aromatic ketones by the regioselective ring cleavage of chiral β-trichloromethyl-β-propiolactone under the Friedel-Crafts conditions
The reaction of enantiomerically pure β-trichloromethyl-β-propiolactone (1) as a chiral building block with an aromatic compound in the presence of Lewis acid provided an acylated product with a chiral trichloromethyl carbinol moiety. The acylated product was used as an effective chiral synthon for natural product synthesis such as enalapril of ACE inhibitor.