申请人:UNIV HONG KONG POLYTECHNIC
公开号:WO2005108377A1
公开(公告)日:2005-11-17
The present invention provides bipyrimidinyl diphosphine compounds of the formula, formula (I) wherein R is optionally substituted alkyl, cycloalkyl, aryl or heteroaryl; R' and R' are independently optionally substituted alkyl, cycloalkyl, aryl or heteroaryl; or an enantiomer thereof; or an enantiomeric mixture thereof. The compounds of the formula (I) are chiral atropisomeric bipyrimidinyl diphosphine compounds and, thus, may be employed as ligands to generate chiral transition metal catalysts which may be applied in a variety of asymmetric reactions, e.g., in palladium catalyzed asymmetric allylic substitution reactions. The compounds of the present invention are easily accessible a in high enantiomeric purity according to the methods disclosed herein.
本发明提供了一种具有以下化学式的双嘧啶二膦化合物,化学式(I)其中R是可选取代的烷基、环烷基、芳基或杂环芳基;R'和R'分别是可选取代的烷基、环烷基、芳基或杂环芳基;或其对映体;或其对映体混合物。化合物的化学式(I)是手性异构的双嘧啶二膦化合物,因此可用作配体生成手性过渡金属催化剂,可应用于各种不对称反应,例如钯催化的不对称烯丙基取代反应。根据本文所披露的方法,本发明的化合物易于获得高对映纯度。