Stereoselective synthesis of optically active cyclopenta[c]pyrans and cyclopenta[c]furans by the intramolecular Pauson–Khand reaction
作者:Serdar Sezer、Ertan Şahin、Cihangir Tanyeli
DOI:10.1016/j.tetasy.2010.02.016
日期:2010.3
An intramolecular Pauson–Khand reaction of enynes derived from homoallyl, homopropargyl, and allyl alcohols is described. 2-Heteroaryl-substituted homoallyl, homopropargyl, and allyl alcohols are easily and efficiently resolved through enzymatic resolution in high ee (91–99%) and with a known stereochemistry. Each enantiomerically enriched enyne derived from homoallyl and homopropargyl alcohols affords
描述了由高烯丙基,高炔丙基和烯丙醇衍生的烯炔的分子内Pauson-Khand反应。2-杂芳基取代的均烯丙基,高炔丙基和烯丙醇可以通过高ee(91-99%)的酶解和已知的立体化学方法轻松高效地拆分。从高烯丙基和高炔丙基醇,得到构象最稳定的非对映体环戊二烯并[导出的各对映体富集的烯炔Ç ]吡喃环系统作为唯一的产物,而由烯丙基醇得到非对映体衍生的对映体富集烯炔顺:反式的环戊二烯的混合物[ C ^ ]呋喃铃声系统。