New heterocyclic syntheses from hydrazidoyl halides. Convenient syntheses of fused pyrimidines, pyridazines, and quinazolines
作者:Abdou O. Abdehamid、Cyril PÁrkÁnyi、Ahmad S. Shawali、Magda A. Abdalla
DOI:10.1002/jhet.5570210425
日期:1984.7
Aminocyanopyrazole derivatives and pyrazolo[2,3-a]quinazolones were obtained in good yields from hydrazidoyl halides and malononitrile. Pyrazolo[3,4-d]pyridazine and pyridazo[4′,5′: 1,2]pyrazolo[1,5-a]quinazoline derivatives were synthesized in quantitative yields by reaction of hydrazine hydrate with 2 and 16, respectively. A novelring system, a 3-substituted tetrahydro derivative of 7-oxo-6H,8H-pyridazo[3′
氨基氰基吡唑衍生物和吡唑并[2,3- a ]喹唑酮类从酰肼基卤化物和丙二腈中以良好的产率获得。通过水合肼与2和16的反应分别定量合成吡唑并[3,4- d ]哒嗪和哒唑并[4',5':1,2,]吡唑并[1,5- a ]喹唑啉衍生物。制备了一种新型的环体系,即7-氧代-6 H,8 H-吡啶唑[ 3',4',5'- c'd' ]-吡唑并[3,4- d ]嘧啶的3-取代四氢衍生物。通过6与碳酸二甲酯的反应。吡唑啉[3,4- d通过2与二硫化碳反应以高收率获得]嘧啶-4,6-二硫酮。根据产品的元素分析,光谱数据和可能的合成方法,对产品的结构进行分配和确认。方案1总结了本工作中讨论的母体稠合杂环系统的结构。
Synthesis of some derivatives of imidazo[1,2-<i>a</i>]pyridine, pyrazolo[1,5-<i>b</i>]imidazole, and 4-(3<i>H</i>)quinazolinone from α-ketohydrazidoyl bromides
作者:Ahmad S. Shawali、M. Sami、S. Mourad Sherif、Cyril Párkányi
DOI:10.1002/jhet.5570170507
日期:1980.7
α-Aroyl-N-arylhydrazidoyl bromides 1 react with 2-aminopyridine in ethanol and give 2-aryl-3-arylazo-imidazo[1,2-α]pyridines 2 in 60-75% yield. The reaction of 1 with 3-phenyl-5-aminopyrazole in ethanol leads to 2,6-diaryl-3-arylazo-1H-pyrazolo[1,5-b]imidazoles 3 in almost quantitative yield. Also, 1 react with anthran-ilic acid in the presence of triethylamine giving 3-arylamino-2-aroyl-4-(3H)quinazolinones 4 in 80-85%
α-Aroyl- Ñ -arylhydrazidoyl溴化物1在乙醇中与2-氨基吡啶反应,得到2-芳基-3-芳基偶氮-咪唑并[1,2-α]吡啶化合物2在60-75%的产率。1与3-苯基-5-氨基吡唑在乙醇中的反应生成2,6-二芳基-3-芳基偶氮-1 H-吡唑并[1,5- b ]咪唑3几乎是定量的。同样,在三乙胺的存在下,1与蒽甲酸反应,以80-85%的收率得到3-芳基氨基-2-芳酰基-4-(3 H)喹唑啉酮4。根据产品的元素分析,电子吸收,红外光谱和核磁共振光谱对产品的结构进行分配和确认。
Abdelhamid, Abdou O.; Zohdi, Hussein F.; Rateb, Nora A., Journal of Chemical Research, Miniprint, 1999, # 3, p. 920 - 932
作者:Abdelhamid, Abdou O.、Zohdi, Hussein F.、Rateb, Nora A.
DOI:——
日期:——
Abdelhamid, Abdou O.; Hassaneen, Hamdi M.; Shawali, Ahmad S., Journal of Heterocyclic Chemistry, 1983, vol. 20, p. 639 - 644
作者:Abdelhamid, Abdou O.、Hassaneen, Hamdi M.、Shawali, Ahmad S.、Parkanyi, Cyril
DOI:——
日期:——
Parkanyi, Cyril; Abdelhamid, Abdou O.; Shawali, Ahmad S., Journal of Heterocyclic Chemistry, 1984, vol. 21, p. 521 - 524
作者:Parkanyi, Cyril、Abdelhamid, Abdou O.、Shawali, Ahmad S.