New electroactive asymmetrical chalcones and therefrom derived 2-amino- / 2-(1H-pyrrol-1-yl)pyrimidines, containing an N-[ω-(4-methoxyphenoxy)alkyl]carbazole fragment: synthesis, optical and electrochemical properties

• Daria G. Selivanova,
• Alexei A. Gorbunov,
• Olga A. Mayorova,
• Alexander N. Vasyanin,
• Igor V. Lunegov,
• Elena V. Shklyaeva and
• Georgii G. Abashev

Beilstein J. Org. Chem. 2017, 13, 1583–1595, doi:10.3762/bjoc.13.158

• of POCl3, DMF and methylketones 3a and 3b resulted in formation of the corresponding 3-aryl-3-chloroprop-2-enals 4a,b, with subsequent sequential treating with Na2S and chloroacetone has given rise to 5-aryl-2-acetylthiophenes 5a,b [21] (Scheme 2). Compounds 2 and 5 (Scheme 2) were further used to

2-Hetaryl-1,3-tropolones based on five-membered nitrogen heterocycles: synthesis, structure and properties

• Yury A. Sayapin,
• Inna O. Tupaeva,
• Alexandra A. Kolodina,
• Eugeny A. Gusakov,
• Vitaly N. Komissarov,
• Igor V. Dorogan,
• Nadezhda I. Makarova,
• Anatoly V. Metelitsa,
• Valery V. Tkachev,
• Sergey M. Aldoshin and
• Vladimir I. Minkin

Beilstein J. Org. Chem. 2015, 11, 2179–2188, doi:10.3762/bjoc.11.236

• their alcohol solutions with the formation of 2-(2-alkoxycarbonyl-6-hydroxyphenyl)benzazoles. Absorption and emission spectra of these compounds have been studied. Results and Discussion In contrast with the cross-aldol reactions of o-chloranil with methylketones [17][21][22] always accompanied by

C–H bond halogenation catalyzed or mediated by copper: an overview

• Wenyan Hao and
• Yunyun Liu

Beilstein J. Org. Chem. 2015, 11, 2132–2144, doi:10.3762/bjoc.11.230

• methylketones 75 in the presence of molecular iodine, respectively. The tandem transformation of a carbonyl acetalization and a iodination in sustainable ethylene glycol under mild heating provided a practical approach in the synthesis of useful protected α-haloketones (Scheme 25). Recently, Kakiuchi and co

Volatile organic compounds produced by the phytopathogenic bacterium Xanthomonas campestris pv. vesicatoria 85-10

• Teresa Weise,
• Marco Kai,
• Anja Gummesson,
• Armin Troeger,
• Stephan von Reuß,
• Silvia Piepenborn,
• Francine Kosterka,
• Martin Sklorz,
• Ralf Zimmermann,
• Wittko Francke and
• Birgit Piechulla

Beilstein J. Org. Chem. 2012, 8, 579–596, doi:10.3762/bjoc.8.65

• comprising ketones and methylketones. The structure of the dominant compound, 10-methylundecan-2-one, was assigned on the basis of its analytical data, obtained by GC/MS and verified by comparison of these data with those of a synthetic reference sample. Application of commercially available decan-2-one

• bacteria were different for growth on media (nutrient broth) with or without glucose. Keywords: Aspergillus nidulans; Fusarium solani; growth inhibition and promotion; methylketones; 10-methylundecan-2-one; Rhizoctonia solani; volatile organic compound (VOC); Xanthomonas campestris pv. vesicatoria

• . vesicatoria 85-10 was shown to be particularly rich in ketones and corresponding alcohols. In addition to straight-chain methylketones from hexan-2-one (compound 1 in Figure 3 and Table 1) to pentadecan-2-one (50), several branched-chain methylketones could be identified (Figure 3, Table 1). The volatiles

Enaminones in a multicomponent synthesis of 4-aryldihydropyridines for potential applications in photoinduced intramolecular electron-transfer systems

• Nouria A. Al-Awadi,
• Maher R. Ibrahim,
• Mohamed H. Elnagdi,
• Elizabeth John and
• Yehia A. Ibrahim

Beilstein J. Org. Chem. 2012, 8, 441–447, doi:10.3762/bjoc.8.50

• prepared by various methods, for example, 1 is readily obtained in excellent yield by the condensation of different methylketones with dimethylformamide dimethylacetal (DMFDMA) [16][17]. In this work we investigated the potential utility of 1 in a three-component synthesis of dihydropyridines (DHP) (Scheme