Regiodivergent Ring Opening of Chiral Aziridines

+ See all authors and affiliations

Science  18 Dec 2009:
Vol. 326, Issue 5960, pp. 1662
DOI: 10.1126/science.1180739

You are currently viewing the abstract.

View Full Text


Kinetic resolution of strained three-membered rings has proven broadly useful for the generation of enantiopure organic intermediates. Herein we demonstrate a complementary approach whereby a single catalyst transforms a racemic mixture of aziridines to a pair of regioisomeric products, each in good yield with exceptionally high enantioselectivity. Specifically, the dimeric yttrium salen catalyst accelerates the ring opening of aliphatic aziridines by trimethylsilylazide, inducing nucleophilic attack at the primary position of one enantiomer and the secondary position of the other. Both rate and selectivity are highly sensitive to the catalyst structure.

View Full Text