The base catalyzed condensation of 4-chloronitrobenzene with 2-(cyanomethyl)-6,7,8,9-tetrahydro-5H-benzocycloheptene afforded the 2,1-benzisoxazole derivative VIa which was reduced with iron in acetic acid to the 2-aminophenone VIIa. Its oxime IXa was treated with chloroacetyl chloride in acetic acid and gave the 4-substituted 6-chloro-2-chloromethylquinazoline 3-oxide (Xa). The treatment with methylamine in methanol led to the substitution reaction with a simultaneous ring elargement and the title compound IVa was formed. A similar reaction with 1-methylpiperazine proceeded without rearrangement resulting in the quinazoline XIa. The object of further experiments was the preparation of the lactam Va, the norpethidine derivative XV and some new approaches to intermediates useful in the synthesis of 5-(2-chlorophenyl)-7ethyl-1,3-dihydrothieno[2,3-e]-1,4-diazepin-2-ones.
4-氯硝基苯与2-(氰甲基)-6,7,8,9-四氢-5H-苯并环庚烯在碱催化下缩合,得到2,1-苯并异噁唑衍生物VIa,用乙酸中的铁还原后得到2-氨基苯酮VIIa。它的肟IXa在乙酸中用氯乙酰氯处理后,得到4-取代的6-氯-2-氯甲基喹唑啉3-氧化物(Xa)。用甲醇中的甲胺处理后,发生了取代反应和同时的环扩张,形成了目标化合物IVa。与1-甲基哌嗪进行类似的反应,没有发生重排反应,结果得到了喹唑啉XIa。进一步实验的目的是制备内酰胺Va,诺哌替啶衍生物XV和一些新的中间体,这些中间体对于合成5-(2-氯苯基)-7-乙基-1,3-二氢噻吩[2,3-e]-1,4-二氮杂环己烷-2-酮非常有用。