Alkylation of 7-chloro-5-phenyl-1,3-dihydro-1,4-benzodiazepin-2-one (I) with 2,5-dimethoxyphenacyl bromide and 3-(4-phenylpiperazino)propyl chloride afforded the N-substituted derivatives of nordazepam III and IV; compound IV revealed properties of a potential hypnotic agent. Reaction of 4-chloronitrobenzene with (2-chlorophenyl)acetonitrile in methanolic solutions of alkali hydroxides gave mixtures from which the following compounds were isolated: 5-chloro-3-(2-chlorophenyl)-2,1-benzisoxazole (VII), the O-methyloxime X, 5-chloro-2,3-bis(2-chlorophenyl)indole (XI), 2-chloro-4'-nitrobenzophenone (XVII) and 2-chloro-9-cyanoacridine N-oxide (XX). A similar reaction of 4-chloronitrobenzene with (2-fluorophenyl)acetonitrile gave compound XX as the main product; in smaller amounts 4-nitroanisole, 2-fluoro-4'-nitrobenzophenone (XVIII) and 2-chloroacridine-9-carbonitrile (XXIV) were obtained. Compound VII was reduced to the aminobenzophenone derivative V which was transformed via the phthalimidoacetyl derivative VI to the chlorodemethyldiazepam II.
将7-氯-5-苯基-1,3-二氢-1,4-苯二氮杂环己-2-酮(I)与2,5-二甲氧基苯乙酰溴和3-(4-苯基哌嗪基)丙基氯烷基化,得到了诺多西泮(III)和(IV)的N-取代衍生物;化合物(IV)表现出潜在催眠药物的特性。4-氯硝基苯与(2-氯苯基)乙腈在碱性氢氧化物甲醇溶液中反应,得到混合物,从中分离出以下化合物:5-氯-3-(2-氯苯基)-2,1-苯并异噁唑(VII)、O-甲氧基肟(X)、5-氯-2,3-双(2-氯苯基)吲哚(XI)、2-氯-4'-硝基苯基酮(XVII)和2-氯-9-氰基喹啉-N-氧化物(XX)。4-氯硝基苯与(2-氟苯基)乙腈进行类似反应,得到化合物XX作为主要产物;少量得到4-硝基苯甲醚、2-氟-4'-硝基苯基酮(XVIII)和2-氯喹啉-9-碳腈(XXIV)。化合物VII还原为氨基苯基酮衍生物V,经过邻苯二甲酰亚乙酸酰衍生物VI转化为氯代甲基二氮杂西泮II。