Diastereoselective Addition Reactions of Furyl Sulfonylimine Using Chiral Boronates as Auxiliary: Application to the Enantioselective Synthesis of 2,3-Disubstituted Furyl Sulfonylamides
作者:Ho-Kee Yim、Henry N. C. Wong
DOI:10.1021/jo030385e
日期:2004.4.1
The addition reactions of various nucleophiles to a furyl sulfonylimine bearing a chiral boronate at the C-3 position furnished chromatographically separable diastereomers. The R diastereoselection was found to be more favorable. Further transformation of C−B bonds to C−C bonds was achieved by using standard Suzuki coupling conditions to give optically active 2,3-disubstituted furyl sulfonylamides
各种亲核试剂与在C-3位置带有手性硼酸酯的呋喃磺酰嘧啶的加成反应提供了色谱上可分离的非对映异构体。在[R diastereoselection被认为是更有利的。通过使用标准的Suzuki偶联条件,可以将C B键进一步转化为C C键,从而得到旋光的2,3-二取代呋喃磺酰酰胺。