申请人:Merck & Co., Inc.
公开号:US04071570A1
公开(公告)日:1978-01-31
New fluoro derivatives of aralkylamine compounds, particularly 2-(2-phenyl-1,1,2,2-tetrafluoroethyl)benzylamine, as well as the N-alkyl and the N,N-dialkyl derivatives thereof are prepared by reaction of 2-bromobenzonitrile with benzylmagnesium chloride to produce 2'-bromo-2-phenylacetophenone; oxidation of said acetophenone with selenous acid to produce 2-bromobenzil; conversion of the benzil compound by treatment with sulfur tetrafluoride to the corresponding 2-bromo-.alpha.,.alpha.-.alpha.',.alpha.'-tetrafluorobibenzyl;followed by reaction of the 2-bromobibenzyl compound with a metal cyanide to produce the corresponding 2-(2-phenyl-1,1,2,2-tetrafluoroethyl)benzonitrile. This nitrile compound is then reduced with lithium aluminum hydride to produce the corresponding benzylamine, which is then converted, if desired, to the N-alkyl and/or N,N-dialkyl 2-(2-phenyl-1,1,2,2-tetrafluoroethyl)benzylamine. Alternatively, the nitrile or the precursor bromobibenzyl can be converted by Grignard reactions to the corresponding .alpha.-alkyl or .alpha.,.alpha.-dialkylbenzylamine which can then be converted if desired to the corresponding N-alkyl and/or N,N-dialkyl substituted benzylamine compound. The phenyltetrafluoroethylbenzylamine as well as its N-alkyl and N,N-dialkyl derivatives are active as antiarrhythmic agents.
新的芳基烷基胺衍生物,特别是2-(2-苯基-1,1,2,2-四氟乙基)苯甲胺及其N-烷基和N,N-二烷基衍生物,是通过2-溴苯甲腈与苯基镁氯反应制备2'-溴-2-苯乙酮;用硒酸氧化该苯乙酮制备2-溴苯并咪唑;通过用四氟化硫处理苯并咪唑化合物制备相应的2-溴-α,α,α',α'-四氟联苯;随后将2-溴联苯化合物与金属氰化物反应制备相应的2-(2-苯基-1,1,2,2-四氟乙基)苯甲腈。然后,该腈化合物用氢化铝锂还原制备相应的苯甲胺,如果需要,可以将其转化为N-烷基和/或N,N-二烷基2-(2-苯基-1,1,2,2-四氟乙基)苯甲胺。或者,腈或前体溴联苯可以通过格氏反应转化为相应的α-烷基或α,α-二烷基苯甲胺,如果需要,可以将其转化为相应的N-烷基和/或N,N-二烷基取代的苯甲胺化合物。苯基四氟乙基苯甲胺及其N-烷基和N,N-二烷基衍生物作为抗心律失常剂具有活性。