a Rh-catalyzed asymmetric allylic substitution. Depending on the type of ligand used, each of two regioisomeric products can be obtained in good yield and excellent enantioselectivity. Under rhodium(I) catalysis, bisphosphine P-Phos ligands form trans-1,2-arylcyclopentenols as the major product, whereas Segphos ligands lead predominantly to trans-1,4-arylcyclopentenols.
的对映体选择性高desymmetrization内消旋环戊-2-烯-1,4-
二乙基二
碳酸酯已使用
铑催化的不对称烯丙位取代显影。根据所用
配体的类型,可以以良好的产率和优异的对映选择性获得两种区域异构产物中的每一种。在
铑(I)催化下,
双膦P-Phos
配体形成反式-1,2-芳基
环戊烯醇作为主要产物,而Segphos
配体主要导致反式-1,4-芳基
环戊烯醇。