Ghosh Arun K, Mathivanan Packiarajan, Cappiello John, Krishnan K
Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607.
Tetrahedron Asymmetry. 1996 Aug;7(8):2165-2168. doi: 10.1016/0957-4166(96)00261-3.
Asymmetric hetero Diels-Alder reactions of Danishefsky's diene and glyoxylate esters catalyzed by bis(oxazoline)-metal complex afforded the corresponding aldol adduct which upon treatment with trifluoroacetic acid furnished the hetero Diels-Alder product in 72% enantiomeric excess and 70% isolated yield.
双(恶唑啉)-金属络合物催化的达尼谢夫斯基双烯与乙醛酸酯的不对称杂环狄尔斯-阿尔德反应得到相应的羟醛加合物,该加合物用三氟乙酸处理后,以72%的对映体过量和70%的分离产率得到杂环狄尔斯-阿尔德产物。