The reactions of 4-methyl- and (RS)-4,6-dimethyl-2-phenyl-5,6-dihydrobenzo[4′,5′]imidazo-[2′,1′:6,1]pyrido[2,3-d]pyrimidines and 4-methyl-5,6-dihydrobenzo[4′,5′]imidazo[2′,1:6,l]pyrido[2,3-d]pyrimi-din-2-ol with aromatic and heterocyclic aldehydes under various experimental conditions were studied. It was shown that the reaction with aldehydes upon boiling in acetic anhydride involves exclusively the
4-甲基-和(RS)-4,6-二甲基-2-苯基-5,6-二氢苯并[4',5']
咪唑-[2',1':6,1]
吡啶基[2]的反应,3- d ]
嘧啶和4-甲基-5,6-二氢苯并[4',5']
咪唑并[2',1:6,l]
吡啶[2,3 - d ]
嘧啶-丁-2-醇与研究了在各种实验条件下的芳族和杂环醛。结果表明,在
乙酸酐中沸腾后,与醛的反应仅涉及四环
苯并咪唑片段α位的6-亚甲基,并伴有1,3-质子交换,导致形成6-芳基(杂芳基)甲基-4-甲基衍
生物。5,6-二氢苯并[4',5']
咪唑并[2',1':6,1]
吡啶[2,3- d ]的取代的2-苯基(羟基)衍
生物中的4-甲基]
嘧啶仅在熔融条件下在ZnCl 2存在下才与醛反应。合成的化合物的结构通过一维和二维(NOESY)1 H NMR光谱法和XRD分析来确认。