Pentadienyl transfer reagents based on zirconium: preparation and reactions with carbonyl compounds
作者:Philippe Bertus、Ludovic Drouin、Christophe Laroche、Jan Szymoniak
DOI:10.1016/j.tet.2003.08.065
日期:2004.2
‘Cp2Zr’. These complexes underwent a highly γ-regioselective and anti-stereoselective in situ addition with carbonyl compounds to afford bis(homoallylic) alcohols in good yields. The reversal of anti vs syn selectivity was simply achieved with BF3, thus expanding the synthetic potential of the reaction.
戊二烯基醚与锆茂新星“ Cp 2 Zr”反应生成了各种2,4-戊二烯基锆。这些配合物与羰基化合物进行了高度γ-区域选择性和抗立体选择性的原位加成,从而以高收率得到双(均烯丙基)醇。用BF 3可以简单地逆转抗反式与顺式选择性,从而扩大了反应的合成潜力。