Hexafluoroacetone as protecting and activating reagent: reactions of hexafluoroacetone with α-keto acids
作者:Jan Spengler、Sergej N. Osipov、Elisabeth Heistracher、Alois Haas、Klaus Burger
DOI:10.1016/j.jfluchem.2004.01.021
日期:2004.6
Hexafluoroacetone and α-keto acids react to give 5,5-bis(trifluoromethyl) substituted 2(5H)-furanones and/or 2,2-bis(trifluoromethyl)-1,3-dioxolan-4-ones depending upon the substituent pattern of the side chain of the acid. A fluoroanalogue of the natural product zymonic acid was obtained from ethyl 3,3,3-trifluoropyruvate and 2-oxosuccinic acid in one step.
六氟丙酮与α-酮酸反应生成5,5-双(三氟甲基)取代的2(5H)-呋喃酮和/或2,2-双(三氟甲基)-1,3-二氧戊环-4-酮酸的侧链。一步就可以从3,3,3-三氟丙酮酸乙酯和2-氧代琥珀酸中获得天然产物zymonic acid的氟类似物。