Chlorotrimethylsilane-Promoted Condensation of Ketones and Aminoazoles
作者:Sergey V. Ryabukhin、Vasiliy S. Naumchik、Oleksandr O. Grygorenko、Andrey A. Tolmachev
DOI:10.1002/jhet.972
日期:2012.9
reaction of ketones and aminoazoles (i.e., 3‐amino‐1,2,4‐triazoles, 5‐aminotetrazole) at 2 : 1 ratio resulted in the formation of 4,5‐dihydroazolo[1,5‐a]pyrimidine derivatives as the single regioisomers in 35 – 71% yields. In the case of tert‐butylmethylketone and 5‐aminotetrazole as the starting materials, the solvent (dimethylformamide) entered the reaction instead of the second ketone molecule.
氯与三甲基硅烷促进的酮和氨基唑(即3-氨基1,2,4-三唑,5-氨基四唑)以2:1的比例反应导致形成4,5-二氢唑[1,5 - a ]嘧啶衍生物作为单一的区域异构体,产率为35 – 71%。以叔丁基甲基酮和5-氨基四唑为起始原料时,溶剂(二甲基甲酰胺)代替了第二个酮分子进入了反应。