selective reactions. For example, Fu's parallel kinetic resolution of 4-alkynals yields very enantioenriched cyclobutanone in low yield and slightly enantioenriched cyclopentenone, as shown below. In theory, parallel kinetic resolution can give the highest ee's of products, since only one enantiomer gives each desired product. For example, for two complementary reactions both with s=49, 100% conversion would give products in 50% yield and 96% ee. These same values would require s=200 for a simple kinetic resolution. As such, the promise of PKR continues to attract much attention. The Kishi CBS reduction remains one of the few examples to fulfill this promise. See also Chiral auxiliaries Chiral pool synthesis Chiral resolution Enantioselective synthesis References Further reading Dynamic Kinetic Resolutions. A MacMillan Group Meeting. Jake Wiener Link Dynamic Kinetic Resolution:A Powerful Approach to Asymmetric Synthesis. Erik Alexanian Supergroup Meeting March 30, 2005 Link Dynamic Kinetic Resolution: Practical Applications in Synthesis. Valerie Keller 3rd-Year Seminar November 1, 2001 Link Kinetic Resolution. David Ebner Stoltz Group Literature Seminar. June 4, 2003 link Kinetic Resolutions. UT Southwestern Presentation. link Stereochemistry