borate complexes derived from bis-(1,2-dimethylpropyl)alkenylboranes and alkynyl-lithiums with iodine and sodium hydroxide produces in a highly stereoselective (> 99%) manner conjugated trans-enynes readily convertible into the corresponding cis,trans-dienes.
用
碘和
氢氧化钠处理由双(1,2-二甲基丙基)烯基
硼烷和炔基
锂衍生的
硼酸盐络合物,以高度立体选择性(> 99%)的方式产生共轭反式-烯炔,可轻松转化为相应的顺式,反式-二烯。