By the REFORMATZKY reaction between citral and ethyl bromoacetate, ethyl citrylideneacetate and a partly cristallized bicyclic δ-lactone have been obtained. The lactone, m. p. 64°, not noticed by other workers, has been studied. The saturated dihydro compound, m. p. 36°, has been prepared. Reduction of the two lactones gave the two corresponding monocyclic diols, m. p. 119° and 80° respectively. The
通过
柠檬酸和
溴代
乙酸乙酯之间的REFORMATZKY反应,获得了亚柠檬基
乙酸乙酯和部分结晶的双环δ-内酯。内酯,熔点64°,尚未被其他工人注意到。制备了饱和的二氢化合物,熔点36°。两种内酯的还原得到两种相应的单
环二醇,分别为mp 119°和80°。二醇mp 119°已经用
臭氧和CrO 3氧化,得到化合物C 12 H 20 O 3。