[5-Chloro-2-(2-methoxyphenylthio)phenyl]acetic acid (VI), obtained via the acetophenone derivative IV, was cyclized to 2-chloro-6-methoxydibenzo[b,f]thiepin-10(11H)-one (VIIIa). 2,10-Dichloro-6-methoxy-10,11-dihydrodibenzo[b,f]thiepin (Xa) was prepared via the alcohol IXa and its substitution reaction with 1-(2-hydroxyethyl)piperazine gave the compound III. Demethylation with boron tribromide in chlorobenzene resulted in the title compound II which is a potential metabolite of the noncataleptic neuroleptic agent docloxythepin.
通过醋苯酮衍生物IV获得的[5-氯-2-(2-甲氧基苯硫基)苯基]乙酸(VI)被环化为2-氯-6-甲氧基二苯并[bf]噻吩-10(11H)-酮(VIIIa)。2,10-二氯-6-甲氧基-10,11-二氢二苯并[bf]噻吩(Xa)通过醇IXa和其与1-(2-羟乙基)哌嗪的取代反应制备。在氯苯中使用三溴化硼去甲基化产生了标题化合物II,这是非痉挛神经阻滞剂多克洛西噻平的潜在代谢产物。