Enantioselective Construction of Pyrroloindolines via Chiral Phosphoric Acid Catalyzed Cascade Michael Addition–Cyclization of Tryptamines
摘要:
Enantioselective construction of pyrroloindolines via chiral phosphoric acid catalyzed cascade Michael addition-cyclization of tryptamines has been realized. With 5 mol % of chiral phosphoric acid, enantioenriched pyrroloindoline derivatives were obtained in good yields and enantioselectivity (up to 95% yield and 83% ee) from readily available tryptamines and enones.
Universal one-pot strategy for fabricating supported chiral organocatalysts via direct covalent immobilization upon hollow mesoporous polystyrene nanospheres
作者:Jianing Zhang、Shan Li、Jie Liu、Xuebing Ma
DOI:10.1016/j.apcata.2022.118976
日期:2023.1
hollow mesoporous organic polystyrene nanospheres (HMOPNs) via a one-pot tandem reaction. Owing to the steric confinement and fast mass transfer originating from their hollow interior, thin shell thickness and abundant mesopores, these supported chiral organocatalysts show excellent catalytic performances in the stereo-controlled steps of the synthesis of natural products and pharmaceuticals in good
Enantioselective Construction of Pyrroloindolines via Chiral Phosphoric Acid Catalyzed Cascade Michael Addition–Cyclization of Tryptamines
作者:Quan Cai、Chuan Liu、Xiao-Wei Liang、Shu-Li You
DOI:10.1021/ol302043s
日期:2012.9.7
Enantioselective construction of pyrroloindolines via chiral phosphoric acid catalyzed cascade Michael addition-cyclization of tryptamines has been realized. With 5 mol % of chiral phosphoric acid, enantioenriched pyrroloindoline derivatives were obtained in good yields and enantioselectivity (up to 95% yield and 83% ee) from readily available tryptamines and enones.