ASYMMETRIC ADDITION OF ACETYLIDE TO ALIPHATIC ALDEHYDES—PREPARATION OF OPTICALLY ACTIVE 5-OCTYL-2(5<i>H</i>)-FURANONE—
作者:Teruaki Mukaiyama、Keisuke Suzuki
DOI:10.1246/cl.1980.255
日期:1980.3.5
Various optically active acetylenic alcohols (40-80%e.e.) were obtained by enantioface-differentiating addition of lithium trimethylsilylacetylide to aliphatic aldehydes utilizing (2S, 2′S)-2-hydroxymethyl-1-[(1-methylpyrrolidin-2-yl)methyl]pyrrolidine as a chiral ligand. Optically active (R)-1-trimethylsilyl-l-undecyn-3-ol (80%e.e.) was transformed into optically active 5-octyl-2(5H)-furanone in good
利用 (2S, 2'S)-2-羟甲基-1-[(1-methylpyrrolidin-2-yl) 将三甲基甲硅烷基乙炔锂对脂肪醛进行对映面差异加成得到各种旋光炔醇 (40-80%ee)甲基]吡咯烷作为手性配体。光学活性的 (R)-1-trimethylsilyl-1-undecyn-3-ol (80%ee) 以良好的产率转化为光学活性的 5-octyl-2(5H)-呋喃酮。