Copper(II) fluoride-catalyzed N-arylation of heterocycles with halothiophenes
摘要:
A novel, cheap copper(II) fluoride-mediated N-arylation of heterocycles with halothiophenes is described. The yield of the pyrazolylthiophene strongly depends on the nature of the initial thiophene. The molecular structure of 3,5-dimethyl-1-(5'-methyl-[2,2']bithienyl-5-yl)-1H-pyrazole was studied by X-ray diffraction. (C) 2010 Elsevier Ltd. All rights reserved.
A novel, cheap copper(II) fluoride-mediated N-arylation of heterocycles with halothiophenes is described. The yield of the pyrazolylthiophene strongly depends on the nature of the initial thiophene. The molecular structure of 3,5-dimethyl-1-(5'-methyl-[2,2']bithienyl-5-yl)-1H-pyrazole was studied by X-ray diffraction. (C) 2010 Elsevier Ltd. All rights reserved.
Rhodium-catalysed direct formylmethylation using vinylene carbonate and sequential dehydrogenative esterification
A rhodium-catalysed direct formylmethylation adopting vinylenecarbonate as an ethynol equivalent is reported. The developed catalytic system is further utilised for the oxidant-free production of esters with the liberation of hydrogen gas. Some control experiments are conducted to elucidate the reaction mechanism.