Rhodium-Catalyzed Asymmetric Hydroformylation of 1,1-Disubstituted Allylphthalimides: A Catalytic Route to β<sup>3</sup>-Amino Acids
作者:Xin Zheng、Bonan Cao、Tang-lin Liu、Xumu Zhang
DOI:10.1002/adsc.201200960
日期:2013.3.11
enantioselective rhodium‐catalyzed hydroformylation of 1,1‐disubstituted allylphthalimides has been developed. By employing chiral ligand 1,2‐bis[(2S,5S)‐2,5‐diphenylphospholano]ethane [(S,S)‐Ph‐BPE], a series of β3‐aminoaldehydes can be prepared with up to 95% enantioselectivity. This asymmetric procedure provides an efficient alternative route to prepare chiral β3‐amino acids and alcohols.
已经开发出高对映体选择性的铑催化的1,1-二取代的烯丙基邻苯二甲酰亚胺亚甲基化。通过采用手性配体1,2-双[(2-小号,5小号)-2,5- diphenylphospholano]乙烷[(小号,小号)-Ph-BPE],一系列的β 3 -aminoaldehydes最多可以与制备对映选择性为95%。这种不对称的过程提供了一种有效的替代路线,制备手性β 3 -氨基酸和醇。