Aerobic Oxidation of Propargylic Alcohols to α,β-Unsaturated Alkynals or Alkynones Catalyzed by Fe(NO3)3·9H2O, TEMPO and Sodium Chloride in Toluene
作者:Shengming Ma、Jinxian Liu、Xi Xie
DOI:10.1055/s-0031-1290811
日期:2012.5
practical aerobic oxidation of propargylic alcohols using Fe(NO3)3⋅9H2O, TEMPO and sodium chloride in toluene at room temperature was applied to various type of propargylic alcohols affording α,β-unsaturated alkynals or alkynones in good to excellent yields. This protocol could be applied in academic laboratories as well as in industrial-scale production. A practical aerobic oxidation of propargylic alcohols
In this study, we discover a good NO/HNO precursor, N-hydroxypyridinesulfonamide, and the regioselective radical nitrososulfonylation reaction of propargyl alcohols. Direct and unique isoxazole synthesis afforded a good-to-high yield of 5-alkyl-3-aryl-4-pyridinesulfonylisoxazoles. Copper-catalyzed aerobic oxidation could efficiently proceed in the presence of thiazolidine-2,4-dione. This work provides
Rh(III)-Catalyzed Coupling of Benzamides with Propargyl Alcohols via Hydroarylation–Lactonization
作者:Fen Wang、Zisong Qi、Jiaqiong Sun、Xuelin Zhang、Xingwei Li
DOI:10.1021/ol403166p
日期:2013.12.20
Rh(III)-catalyzed C-H activation and annulation of 1-benzoylpyrrolidine with propargyl alcohols has been achieved for an efficient synthesis of (4-benzylidene)isochroman-1-one. Highly enantioenriched products were obtained starting from optically pure propargyl alcohols.