Organocatalyzed Asymmetric Conjugate Addition of Heteroaryl and Aryl Trifluoroborates: a Synthetic Strategy for Discoipyrrole D
作者:Jiun‐Le Shih、Thien S. Nguyen、Jeremy A. May
DOI:10.1002/anie.201503528
日期:2015.8.17
Bis‐heteroaryl or bis‐aryl stereocenters were formed by an organocatalytic enantioselective conjugateaddition using the respective trifluoroborate salts as nucleophiles. Control studies suggested that fluoride dissociation is necessary in the anhydrous conditions. This strategy is applicable to the synthesis of discoipyrroleD, an inhibitor of BR5 fibroblast migration.
First Bovine Serum Albumin-Promoted Synthesis of Enones, Cinnamic Acids and Coumarins in Ionic Liquid: An Insight into the Role of Protein Impurities in Porcine Pancreas Lipase for Olefinic Bond Formation
作者:Nandini Sharma、Upendra K. Sharma、Rajesh Kumar、Nidhi Katoch、Rakesh Kumar、Arun K. Sinha
DOI:10.1002/adsc.201000870
日期:2011.4.18
bromide (BSA‐[bmim]Br) has been developed for the synthesis of (E)‐α,β‐unsaturated compounds including a one‐pot cascade synthesis of cinnamic acids and coumarins via aldol, Knoevenagel and Knoevenagel–Doebnercondensations.
Reaction of α,β-unsaturated ketones with tetracyanoethylene
作者:Vladimir P Sheverdov、Oleg V Ershov、Oleg E Nasakin、Anatoly N Chernushkin、Victor A Tafeenko、Sergei I Firgang
DOI:10.1016/s0040-4020(01)00491-4
日期:2001.7
Reaction of tetracyanoethylene with α,β-unsaturated ketones was investigated. 3-R1-4-R2-6-R3-5-oxo-1,1,2,2-cyclohexanetetracarbonitriles, unsaturated tetracyanoalkanones, 3-R-5,5-dihydroxy-1,1,2,2-cyclohexanetetracarbonitriles, 1,2,2-tricyano-3-R-5-oxo-1-cyclohexanecarboxamides, 3-R1-4-R2-8-R3-5-hydroxy-7-oxo-6-azabicyclo[3.2.1]octane-1,2,2-tricarbonitriles were synthesized.