Squaramide-catalyzed enantioselective Michael addition of masked acyl cyanides to substituted enones.
Yang KS, Nibbs AE, Türkmen YE, Rawal VH. Squaramide-catalyzed enantioselective Michael addition of masked acyl cyanides to substituted enones. J Am Chem Soc. 2013 Oct 30; 135(43):16050-3.