Perkin communications. Biocatalytic asymmetric cycloaddition of benzonitrile N-oxides to N-vinylcarbazole
Abstract
Baker's yeast catalyses asymmetric cycloaddition of the benzonitrile N-oxides 2–4 to N-vinylcarbazole 1 to yield optically active 4,5-dihydroisoxazoles 5–7 in good yields with an enantiomeric excess (ee) of up to 51%.