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Synthesis of azidotryptamines from commercially available nitroindoles via the corresponding amino tryptamines in good overall yields (15-38%) is presented. 相似文献
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L. P. Prikazchikova B. M. Khutova V. M. Cherkasov 《Chemistry of Heterocyclic Compounds》1974,10(8):998-999
Reaction of 4,6-dimethylpyrimidine with the acyl chlorides of aromatic carboxylic acids gave N-acyl-4-phenacyl-6-acylmethylidynepyrimidines, which undergo alcoholysis to give the corresponding diketones — 4,6-diphenacylpyrimidines. 相似文献
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2H-吡喃-2-酮及其衍生物是有机合成的蓬要中间体。对于它们的合成已有许多报道,例如利用烯醇醚或烯醇砖醚与丁酰氯反应;羰基化合物与甲氧亚甲螭丙二酸二甲酯反应;α-苯基丙醛酸酯与丙酮的成环缩合2,6-二氯-3-三氯甲基吡啶与亚甲基丁二酸酯的反应,邻氰基苯乙炔、二苯乙二酮和丙酮的反应。但上述方法往往原料较难得到,产率较低或操作麻烦。 相似文献
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P. I. Abramenko 《Chemistry of Heterocyclic Compounds》1967,3(4):294-294
New heterocyclic compounds with a condensed thiophene ring are synthesized. 相似文献
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P. I. Abramenko 《Chemistry of Heterocyclic Compounds》1969,3(4):294
New heterocyclic compounds with a condensed thiophene ring are synthesized. 相似文献
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7,7-二甲基-2-对溴苯基-4-苯基-5-氧代-1,4,5,6,7,8-六氢化-6H-喹啉的合成及晶体结构 总被引:1,自引:0,他引:1
标题化合物C23H22BrNO是由1-(4-溴苯基)-3-苯基-2-丙烯-1-酮与5,5-二甲基-1, 3-环己二酮在N, N-二甲基甲酰胺(DMF)中在NH4OAc催化下反应而得。结构通过单晶X-射线衍射分析确定,其晶体属于单斜晶系,空间群C2/C, a = 19.678(4),b = 13.571(2),c = 17.311(3) 牛琤 = 118.74(1),Mr = 408.33, V = 4055(1) ?,Dc = 1.338 g/cm3, Z = 8, m (MoKa) = 2.038 mm-1, F(000) = 1680, R = 0.0539,wR = 0.1369。X-衍射分析表明,六元环C(10)C(13)C(16)C(17)采用半椅式构象:原子C(10),C(11),C(12),C(16)和C(17)在同一个平面内,而原子C(13)远离平面为0.3282 牛闷矫嬗?个苯环的夹角分别为41.09, 81.97,2个苯环的夹角为75.87。另外在晶体结构中,存在1个分子间氢键。 相似文献
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Anumberofnucleosideshavebeenreportedtobeanti-hepatitisBvirusagents',althoughnoneofthemhaveyetbeenprovedtobeclinicallyusefull.Inaddition,dimethyldicarboxylatebiphenyl(DDB)isawidelyusedanti-hepatiticdrugwithhigheffectinloweringSGPTandconsiderablelowtoxicity'.InviewofthediscoverythatseveralnucleosideswiththeD-configurationandanaloguesofthebiphenyldicarboxylateareselectiveantiviralagents,itwasofinteresttosynthesizenucleosidederivativesaspotentialantiviralagents.Recently,thecarbocyclicanalogueo… 相似文献
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多硝基多氨基三唑类衍生物作为含能材料,具有高氮、致密、钝感等优点。本文通过3-氨基-1,2,4-三唑和三硝基三氯苯的缩合,再经过三唑碳原子上的硝化反应和芳环上的氨化反应,合成并鉴定了标题化合物。 相似文献
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A new route to 1,3-disubstituted-4, 5, 6, 7-tetrahydro benzo[c]thiophene-4-one is described starting from 1, 3-cyclohexanedione. 相似文献
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Synthesis of 1, 4, 5, 6-Tetrahydro 2-methyl 4-pyrimidine carboxylic acid (Ectoïne) is achieved by thermal cyclization of N-Acetyl diaminobutyric acid, itself synthesized by acetylation of (L) 2,4-diaminobutyric acid. 相似文献
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A. V. Komkov V. A. Voronkova A. S. Shashkov V. A. Dorokhov 《Russian Chemical Bulletin》2012,61(2):332-342
Diacetyl ketene N,S-acetal was used for the synthesis of 5-acetyl-6-amino-4-methylsulfanylpyrimidines substituted at the exocyclic nitrogen atom, which were further oxidized with m-chloroperbenzoic acid to the corresponding methylsulfonylpyrimidines. Reactions of hydrazines with these pyrimidines containing vicinal Ac and MeS (or MeSO2) groups were used for the preparation of new 4-aminopyrazolo[3,4-d]pyrimidine derivatives. 相似文献