Catalytic Asymmetric Addition of Diorganozinc Reagents to Pyrazole‐4,5‐Diones and Indoline‐2,3‐Diones
作者:Rong‐Hui Wang、Ya‐Ling Li、Hong‐Jiao He、You‐Cai Xiao、Fen‐Er Chen
DOI:10.1002/chem.202005081
日期:2021.3
The catalytic enantioselective diorganozinc additions to cyclic diketones including pyrazolin‐4,5‐diones and isatins have been developed. In the presence of morpholine‐containing chiral amino alcohol ligand, the corresponding chiral cyclic tertiary alcohols were produced in good to excellent yields (up to 97 %) and enantioselectivities (up to 95 % ee). The notable feature of this protocol includes
已经开发了对环二酮(包括吡唑啉-4,5-二酮和靛红)的催化对映选择性二有机锌。在含有吗啉的手性氨基醇配体存在的情况下,相应的手性环状叔醇以良好至极佳的收率(高达97%)和对映选择性(高达95%ee)生产。该方案的显着特征包括温和的反应条件,无路易斯酸添加剂和宽泛的官能团耐受性。