Chlorination and decarboxylation of (heptafluoronaphthalen-2-yl)acetic acid. Synthesis of 2-(dichloromethyl)- and 2-(difluoromethyl)heptafluoronaphthalenes
作者:V. R. Sinyakov、T. V. Mezhenkova、V. M. Karpov、Ya. V. Zonov
DOI:10.1134/s1070428016100092
日期:2016.10
Decarboxylation of (heptafluoronaphthalen-2-yl)acetic acid in DMF in the presence of NaHCO3 gave 2-methylheptafluoronaphthalene, and treatment with PCl5 on heating afforded dichloro(heptafluoronaphthalen-2-yl)acetic acid. Decarboxylation of the latter in DMF led to the formation of 2-(dichloromethyl)-heptafluoronaphthalene which was converted to 2-(difluoromethyl)heptafluoronaphthalene by heating with
在NaHCO 3存在下,在DMF中使(七氟萘-2-基)乙酸脱羧,得到2-甲基七氟萘,并在加热下用PCl 5处理,得到二氯(七氟萘-2-基)乙酸。后者在DMF中的脱羧导致2-(二氯甲基)-七氟萘的形成,通过与氟化铯加热将其转化为2-(二氟甲基)七氟萘。