Regioselective ring cleavage of chiral β-trichloromethyl-β-propiolactone with organoaluminum compounds for the synthesis of optically active intermediates
A novel alkylating ring cleavage reaction of enantiomerically pure β-trichloromethyl-β-propiolactone as a chiral building block with organoaluminum compounds provided ring-opened products with a chiral trichloromethylcarbinol moiety. A product was demonstrated to be used as an effective chiral synthon for the synthesis of chiral bioactive derivatives such as ipsdienol and sodium cilastatin.