作者:P. Brown、J. Burdon、T.J. Smith、J.C. Tatlow
DOI:10.1016/s0040-4020(01)97803-2
日期:——
5,5,5-Trifluorolaevulic acid (II) has been prepared by the acidic hydrolysis of the Claisen condensation product (I) of ethyl trifluoroacetate and diethyl succinate. Dehydration of the acid (II) with phosphoric oxide gave 4-hydroxy-5,5,5-trifluoropent-3-enoic acid lactone (III). Reduction of either this lactone or the acid (II) with lithium aluminium hydride gave 5,5,5-trifluoropentane-1,4-diol (IV)
通过对三氟乙酸乙酯和琥珀酸二乙酯的克莱森缩合产物(I)进行酸性水解,可以制备5,5,5-三氟戊酸(II)。用氧化磷将酸(II)脱水,得到4-羟基-5,5,5-三氟戊-3-烯酸内酯(III)。用氢化铝锂还原该内酯或酸(II),得到5,5,5-三氟戊烷-1,4-二醇(IV),其中5,5,5-三氟戊-1,3-二烯(VI )是通过乙酰化然后热解获得的。