N-Acetylimidazole is a commonly used acylating reagent. When it is allowed to react with several typical enamines, amides are produced rather than the expected acylated enamines.
N-乙酰胺基咪唑是常用的酰化剂。当使其与几种典型的烯胺反应时,会生成酰胺,而不是预期的酰化烯胺。
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.