Nucleophilic addition of potassium organotrifluoroborates to chiral cyclic N-acyliminium ions: stereoselective synthesis of functionalized N-heterocycles
作者:Adriano S. Vieira、Fernando P. Ferreira、Pedro F. Fiorante、Rafael C. Guadagnin、Hélio A. Stefani
DOI:10.1016/j.tet.2008.02.006
日期:2008.4
The stereoselective nucleophilic addition of potassium aryl- and alkynyltrifluoroborates to cyclic N-acyliminium ion derivatives from N-benzyl-3,4,5-triacetoxy-2-pyrrolidinone, affording the respective 5-substituted 2-pyrrolidinone is described. The products were obtained in moderate to good yields and with preference for the syn diastereomer.
描述了将芳基-和炔基三氟硼酸钾立体选择性亲核加成到来自N-苄基-3,4,5-三乙酰氧基-2-吡咯烷酮的环状N-酰基亚胺离子衍生物上,得到各自的5-取代的2-吡咯烷酮。以中等至良好的产率获得产物,并且优选顺式非对映异构体。