Various thiophenecarboxylates carrying a 2-trifluoromethyl, 2-(1,1-difluoroalkyl) or 2-polyfluoroalkyl group are synthesized conveniently from reaction of α-fluoroalkyl ketones 1, aldehydes 2 or ethyl α-fluoroalkylacetates 3 with methyl (or ethyl) 2-sulfanylacetates 4. A possible reaction pathway is suggested.
δ-氟烷基酮 1、醛 2 或δ-氟烷基
乙酸乙酯 3 与 2-
硫代乙酸甲酯(或
乙酯)4 反应,可方便地合成带有 2-三
氟甲基、2-(1,1-二氟烷基)或 2-多氟烷基的各种
噻吩羧酸盐。提出了一种可能的反应途径。