An optically active monophosphino carboxylic acid derivative of formula (I):
wherein:
each R1 independently represents a C1-6 alkyl group or phenyl group which is unsubstituted or substituted with a C1-4 alkyl group or C1-4 alkoxy group;
R2 represents a C1-4 alkyl group; and
R3 and R4 each independently represents a hydrogen atom, or a C1-4 alkyl group or phenyl group which is unsubstituted or substituted with a C1-4 alkyl or C1-4 alkoxy group.
一种具有光学活性的式 (I) 单
磷羧酸衍
生物:
其中
每个 R1 独立地代表未被取代或被 C1-4 烷基或 C1-4 烷氧基取代的 C1-6 烷基或苯基;
R2 代表 C1-4 烷基;以及
R3 和 R4 各自独立地代表一个氢原子,或一个未被 C1-4 烷基或 C1-4 烷氧基取代或被 C1-4 烷基或 C1-4 烷氧基取代的 C1-4 烷基或苯基。