Subjecting a variety of oxabicyclo[2.2.1]heptenes to diisobutylaluminum hydride (DIBAL-H) in the presence of a catalytic amount of Ni(COD)2 and (R)-BINAP results in a highly enantioselective ring opening to generate cyclohexenols with ee's typically greater than 90%. The scope of this reaction has been delineated and alternative nickel catalysts have been examined which are less sensitive than Ni(COD)2
在催化量的Ni(COD)2和(R)-BINAP存在下,使各种氧杂双环[2.2.1]庚烯经历
二异丁基氢化铝(D
IBAL-H)导致高度对映选择性的开环,与ee's生成
环己烯醇通常大于90%。已经确定了该反应的范围,并且已经研究了比Ni(COD)2敏感度低的替代
镍催化剂。