• Enantioselective Henry reaction catalyzed by CuII salt and bipiperidineNoole, Artur; Lippur, Kristin; Metsala, Andrus; Lopp, Margus; Kanger, TõnisThe journal of organic chemistry2010 / p. 1313-1316 https://pubmed.ncbi.nlm.nih.gov/20095538/