作者:John A. Milligan、Carl A. Busacca、Chris H. Senanayake、Peter Wipf
DOI:10.1021/acs.orglett.6b02051
日期:2016.9.2
and converted to other functional groups, thus enabling the preparation of bidentate ligands that access new conformational space by virtue of their attachment to the torsionally malleable but sterically restrictive cyclobutane scaffold. The enantioselective hydrogenation of dehydrophenylalanine using a bidentate phosphine–phosphite ligand illustrates the synthetic utility of the newly prepared scaffold
双环[1.1.0]丁腈与膦硼烷和亚磷酸酯的亚磷酸化提供了新的环丁基-P衍生物。该反应通常有利于顺式-非对映异构体,并且腈可被还原并转化为其他官能团,从而使得能够制备由于其与可扭转延展但空间受限的环丁烷骨架的连接而进入新的构象空间的二齿配体。使用双齿膦-亚磷酸酯配体的对氢苯丙氨酸的对映选择性氢化说明了新制备的支架的合成效用。