Enolate Additions to a Chiral 3-Hydroxypropionate 2,3-Dication Equivalent. Enantioselective Synthesis of β,δ-Dihydroxy Esters
作者:W. Zhen、K.-H. Chu、M. Rosenblum
DOI:10.1021/jo9621940
日期:1997.5.1
The use of opticallyactive dicarbonyl cyclopentadienyliron(vinyl ether) BF(4) salts, 3 and 4, as enantioselective 3-hydroxypropionate 2,3-dication equivalents is outlined. Complexes 3 and 4 are readily available by exchange etherification of 2, and these have been transformed to enantiomeric dicarbonyl (eta-cyclopentadienyliron)(eta(2)-1-methoxypropene) BF(4) 5 and ent-5. Complex 5 has been converted