申请人:Chirotech Technology, Ltd.
公开号:US06156935A1
公开(公告)日:2000-12-05
A chiral phosphorus-based ligand, in single enantiomer form, which is capable of complexing a transition metal atom and of acting as a ligand in asymmetric chemical catalysts, which comprises the partial structure R.sup.1 R.sup.2 P--O--C--X--Y--C--O--PR.sup.1 R.sup.2 (I) wherein each of X and Y is C or a heteroatom; the C--X--Y--C chain forms part of a linearly-fused bicyclic structure; and either R.sup.1 and R.sup.2 are each independently H or an organic group of up to 20 carbon atoms, including alkyl, fluoroalkyl, aryl, alkylaryl, alkoxy, aryloxy, and alkylaryloxy, or PR.sup.1 R.sup.2 is cyclic such that R.sup.1 and R.sup.2 are covalently linked, optionally with additional substituents.
一种手性的磷基配体,以单对映体形式存在,能够与过渡金属原子配位并作为不对称化学催化剂中的配体,包括部分结构R.sup.1 R.sup.2 P--O--C--X--Y--C--O--PR.sup.1 R.sup.2(I),其中X和Y均为C或杂原子;C--X--Y--C链构成线性融合的双环结构的一部分;R.sup.1和R.sup.2分别独立地为H或最多含有20个碳原子的有机基团,包括烷基,氟烷基,芳基,烷基芳基,烷氧基,芳氧基和烷基芳氧基,或PR.sup.1 R.sup.2为环状,使得R.sup.1和R.sup.2通过共价键连接,可选地带有额外的取代基。