共查询到20条相似文献,搜索用时 15 毫秒
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Russian Chemical Bulletin - New 4-dimethylamino-2-(naphthalen-1-yl)-1-phenyl-1-(quinolin-3-yl)butan-2-ols with antituberculosis activity were synthesized.... 相似文献
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Russian Journal of Organic Chemistry - The Ritter cyclocondensation of 2-methyl-3-phenylpropan-2-ol with 4-isocyanatoaniline, 2-methyl-4-thiocyanatoaniline, and ethyl 4-amino-3-thiocyanatobenzoate... 相似文献
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《Tetrahedron: Asymmetry》2006,17(17):2516-2530
(S)-(−)-(Benzotriazol-1-yl)- and (S)-(−)-(benzotriazol-2-yl)-alkan-2-ols 7a–9a, 7b–9b and their (R)-(+)-acetates 10a–12a and 10b–12b were prepared in high enantiomeric excess via lipase from Pseudomonas fluorescens (Amano AK) catalyzed enantioselective acetylation of racemic alcohols 4a–6a and 4b–6b with vinyl acetate in tert-butyl methyl ether or toluene at 23 °C. The enantioselectivity of this transformation was dependent on the length of the alkyl chain with E-values ranging from 30 to 57. Several benzotriazole substituted ketones 1a–3a and 1b–3b were synthesized from 1H-benzotriazole and corresponding haloketones. These compounds were stereoselectively reduced with Baker’s yeast in water or in organic solvent containing 5% v/v of water at 30 °C to give the (S)-(−)-alcohol. Better stereoselectivity was observed in the kinetic resolution of racemic alcohols 4a–6a and 4b–6b (ee = 69–92% at 44–52% conversion) compared to reduction of corresponding prochiral ketones 1a–3a and 1b–3b with Baker’s yeast (ee = 40–67% at 39–89% conversion). Enhanced enantioselectivities were observed at lower temperatures. 相似文献
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A series of 5-(1-aminocyclohexyl)-2(1H)-pyridinones was prepared in 16-32% yield. The key step is a Ritter reaction of the analogous alcohols. The results reported demonstrate the difference in reactivity between the closely related 2-alkoxy-pyridines and 2 (1H)-pyridinones. 相似文献
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Zhang Qun-Zheng Li Zhi-Yuan Zhang Le Lv Na Pan Qing Ke Cong-Yu Zhang Xun-Li 《Russian Journal of Organic Chemistry》2020,56(12):2201-2206
Russian Journal of Organic Chemistry - There remain challenges for effectively synthesizing heterocycles containing both piperidine and pyridine rings, mainly due to the inefficient synthetic... 相似文献
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Ramiro Araya-Maturana Jorge Heredia-Moya Hernán Pessoa-Mahana Boris Weiss-López Juan Carlos Muñoz 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(4):o237-o239
The title compound, C12H7NO3, consists of a chromone moiety substituted in position 3 with an acrylonitrile group in a Z configuration. The two planar groups are twisted with respect to one another. The only significant hydrogen bond in the structure is an intramolecular O—H·O bond. π–π contacts connecting aromatic groups and C—H·O intermolecular weak interactions lead to a supramolecular layer arrangement. 相似文献
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N. Z. Akopyan O. A. Papoyan G. A. Gevorgyan G. A. Panosyan 《Russian Journal of General Chemistry》2013,83(11):2066-2070
Aminomethylation of 1-(4-butoxyphenyl)-2-phenylethanone with paraformaldehyde and substituted piperazines in ethanol medium results in 1-(4-butoxyphenyl)-3-(4-R-piperazin-1-yl)-2-phenylpropan-1-ones. The latter react with cyclohexylmagnesium halide to give 1-(4-butoxyphenyl)-1-cyclohexyl-3-(4-arylpiperazin-1-yl)-2-phenylpropan-1-ols. Reduction of the prepared β-aminoketones with lithium aluminum hydride in absolute diethyl ether leads to the secondary aminopropanols. The prepared compounds could be converted into the corresponding dihydrochlorides. 相似文献
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Ivleva E. A. Kazakova A. I. Klimochkin Yu. N. 《Russian Journal of Organic Chemistry》2020,56(9):1562-1569
Russian Journal of Organic Chemistry - A convenient method has been developed for the synthesis of 3,5-bis(hydroxymethyl)adamantan-1-ols via successive nitroxylation of... 相似文献
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用Heck反应合成1-羟基-4-(3-吡啶基)丁-2-酮 总被引:1,自引:0,他引:1
在Heck反应条件下,以Ph3P为催化剂配体,由3-卤代吡啶和3-丁烯-1,2-二醇进行偶合可以得到1-羟基-4-(3-吡啶基)丁-2-酮,具有原料易得、合成方法简单的优点. 相似文献
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Nicolas Lebouvier Typhanie Corbin Guillaume Le Baut Marc Le Borgne 《Tetrahedron letters》2006,47(36):6479-6483
New conazole antifungals, in the series of triazole alcohols 23a-d and 24a-e incorporating an indole moiety substituted at 5-position by halogens, a cyano or 4-methoxyphenyl group, have been synthesized by ring opening of corresponding oxiranes 15 and 16. These dihalogeno intermediates and their congeneers could be prepared in high yields by Corey-Chaykovsky reaction under microwave irradiation. 相似文献
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Alex F. C. Flores Juliana L. Malavolta Leandro M. Frigo Morgana Doneda Darlene C. Flores 《合成通讯》2013,43(10):1198-1204
We develop an efficient method to synthesize novel propionyl-spaced bisheterocyclic compounds. It entails cyclocondensation of 3-(5-trifluoromethyl-1H-pyrazol-3-yl)propanoyl hydrazide obtained from levulinic acid, with 1,1,1-trifluoro-4-methoxy-3-alken-2-ones proceeding regiospecifically to 1-[(5-trifluoromethyl-5-hydroxy-3-substituted-4,5-dihydro-1H-pyrazol-1-yl)-3-(5-trifluoromethyl-1H-pyrazol-3-yl)propan-1-one derivatives. 相似文献
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Avetisyan A. A. Aleksanyan I. L. Pivazyan A. A. 《Russian Journal of Organic Chemistry》2004,40(6):889-891
A procedure was developed for the synthesis of (4-hydroxy-2-methylquinolin-3-yl)acetic acid and the corresponding acyl chloride. Reactions of the latter with o-aminobenzenethiol, o-phenylenediamine, o-aminophenol, anthranilic acid, and thiosemicarbazide gave, respectively, 2-(4-hydroxy-2-methylquinolin-3-ylmethyl)-1,3-benzothiazole, -benzoxazole, -benzimidazole, 2-(4-hydroxy-2-methylquinolin-3-ylmethyl)-4H-3,1-benzoxazin-4-one, and 4-hydroxy-2-methyl-3-(5-sulfanyl-1H-1,2,4-triazol-3-ylmethyl)quinoline. 相似文献