sulfinamide bisphosphine catalysts (Wei‐Phos) were developed. These could be easily prepared from commercially available starting materials. Wei‐Phos has shown good performance in the very challenging intermolecular cross‐Rauhut–Currier reactions of vinyl ketones and 3‐acyl acrylates or 2‐ene‐1,4‐diones, leading to the R‐C products in high yields with up to 99 % ee under 2.5–5 mol% catalyst loading. The highly
The enantioselectiveintermolecular cross Rauhut-Currierreaction of acrolein with active olefins has been a long-standing challenge because of competitive MBH reaction and polymerization. Reported herein is a highly enantioselectiveintermolecular...
Highly Enantioselective Intermolecular Cross Rauhut-Currier Reaction Catalyzed by a Multifunctional Lewis Base Catalyst
作者:Xuelin Dong、Ling Liang、Erqing Li、You Huang
DOI:10.1002/anie.201409744
日期:2015.1.26
The highlyenantioselective intermolecular cross Rauhut–Currier reaction of different active olefins catalyzed by a multifunctional chiral Lewisbase was reported. The RC products were obtained in excellent yields (up to 98 %), high chemo‐ and enantioselectivity (up to 96 % ee). The reaction could be performed on a gram scale using 1 mol % of the multifunctional phosphine catalyst.
Diastereoselective Synthesis of 3-Hydroxyindanones via N-Heterocyclic Carbene Catalyzed [4+1] Annulation of Phthalaldehyde and 1,2-Diactivated Michael Acceptors
作者:Song Ye、Fang-Gang Sun
DOI:10.1055/s-0030-1259707
日期:2011.4
The diastereoselective synthesis of 2,2-disubstituted-3-hydroxy-indanones was realized by the N-heterocyclic carbene catalyzed [4+1] annulation of phthalaldehyde and 1,2-diactivated Michaelacceptors, which involves a tandem process of Stetter reaction, proton shift, and aldol reaction.