4-Dimethylamino-1-trifluoracetyl-pyridinium-trifluoracetat: Ein effizientes Reagens zur Synthese von Trifluormethyl-1,3-dicarbonyl-Verbindungen
作者:Gerhard Simchen、Andreas Schmidt
DOI:10.1055/s-1997-1501
日期:1997.1
4-Dimethylamino-1-trifluoroacetylpyridinium Trifluoroacetat: An Efficient Reagent for the Preparation of Trifluoromethyl-1,3-Dicarbonyl CompoundsEnamines 2 and O-trimethylsilyl ketene acetals 4 are trifluoroacetylated on reaction with the title reagent to yield trifluoroacetyl enamines 3 and trifluoromethylsilylenol ethers 5, respectively. Trifluoromethyl 1,3-diketones 6 and trifluoromethyl β-keto esters 7 are obtained by hydrolysis of compounds 3 and 5.
4-Dimethylamino-1-trifluoroacetylpyridinium Trifluoroacetat:烯胺 2 和 O-三甲基硅酮乙醛 4 在与标题试剂反应时发生三氟乙酰化反应,分别生成三氟乙酰基烯胺 3 和三氟甲基硅醇醚 5。化合物 3 和 5 经水解可得到三氟甲基 1,3-二酮 6 和三氟甲基 δ-酮酯 7。