申请人:Bayer Aktiengesellschaft
公开号:US05434303A1
公开(公告)日:1995-07-18
A new process for the preparation of 1-fluoro-cyclopropane-1-carboxylic acid of the formula ##STR1## which process comprises a) reacting in a first step, a 1-fluoro-cyclopropyl phenyl ketone of the formula ##STR2## in which R represents hydrogen, halogen, methyl, methoxy, phenyl or phenoxy, with an peroxy compound in the presence of a diluent, and b) reacting, in a second step, the resulting 1-fluoro-cyclopropane-1-carboxylate of the formula ##STR3## in which R has the abovementioned meaning, with a base in the presence of a diluent, and then acidifying the mixture. New 1-fluoro-cyclopropane-1-carboxylates of the above-mentioned formula.
一种制备1-氟环丙烷-1-羧酸的新工艺,该工艺包括a)在第一步中,在稀释剂存在下,将式为##STR2##的1-氟环丙基苯基酮(其中R代表氢,卤素,甲基,甲氧基,苯基或苯氧基)与过氧化物化合物反应;b)在第二步中,在稀释剂存在下,将所得的式为##STR3##的1-氟环丙烷-1-羧酸酯(其中R具有上述含义)与碱反应,然后使混合物酸化。上述公式的新1-氟环丙烷-1-羧酸酯。