Asymmetric hetero-Diels–Alder reaction of glyoxylate esters and Danishefsky’s diene catalyzed by chiral bis(oxazoline)–lanthanide complexes
作者:Changtao Qian、Longcheng Wang
DOI:10.1016/s0040-4039(00)00144-1
日期:2000.3
Asymmetric hetero-Diels–Alder reactions of glyoxylate esters and Danishefsky’s diene catalyzed by various chiral bis(oxazoline)–lanthanide complexes afforded the corresponding aldol adducts, which upon treatment with trifluoroacetic acid, furnished the hetero-Diels–Alder product in up to 77% enantiomeric excess and 73% isolated yield.
各种手性双(恶唑啉)-镧系元素络合物催化乙醛酸酯和Danishefsky's二烯的不对称杂Diels-Alder反应,得到相应的羟醛加合物,用三氟乙酸处理后得到的杂Diels-Alder产物高达77%对映体过量和73%的分离产率。