Diastereoselective Construction of CF
<sub>3</sub>
‐Containing Bispiro[isoquinolone‐pyrrolidine‐benzothiophenone]s through 1,3‐Dipolar Cycloaddition
作者:Cheng Niu、Da‐Ming Du
DOI:10.1002/ejoc.202200645
日期:2022.7.14
AbstractA new protocol to access CF3‐containing bispiro[isoquinolone‐pyrrolidine‐benzothiophenone]s was described. A series of 1,3‐dipoles were synthesized from isoquinolinetrione and CF3CH2NH2. In the presence of 10 mol% DABCO, the 1,3‐dipolar cycloaddition of isoquinolinedione trifluoroethyl ketimines and unsaturated benzothiophenones delivered corresponding adducts in excellent yields (up to 98 %) and diastereoselectivities (up to >20 : 1 dr).