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Kenchappa R. Bodke Yadav D. Telkar Sandeep Sindhe M. Aruna Giridhar M. 《Russian Journal of General Chemistry》2016,86(12):2827-2836
Russian Journal of General Chemistry - A novel series of (5-substituted-1-benzofuran-2-yl)(2,4-substituted phenyl)methanones (4a–4i) have been prepared by the Knoevenagel condensation of... 相似文献
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A rapid, efficient, and reliable access for the synthesis of an assortment of 4-methyl-7-alkyl/aryl/heteroaryl alkynyl coumarins has been developed by the copper, amine, and ligand-free Sonogashira cross-coupling reaction of 4-methyl-7-nonafluorobutylsulfonyloxy coumarin with various terminal alkynes under microwave irradiation. In the presence of a suitable catalyst, base, and solvent, the coupling reaction proceeded smoothly to give the diaryl alkynes in satisfactory to exceptional yields. Nonaflates coupled more efficiently than the corresponding triflates which yielded the detriflated product as well as the hydrolyzed product as competing side products along with the required product. The utilization of TBAF·3H2O as a mild base as well as a solvating agent was the key for success of the reaction. 相似文献
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Bhovi K. Venkatesh Yadav D. Bodke S. A. Biradar 《Phosphorus, sulfur, and silicon and the related elements》2013,188(9):1926-1931
A protocol for the synthesis of 3-[4-(1-benzofuran-2-yl)-1,3-thiazol-2-yl]-2-(4-aryl)-1,3-thiazolidin-4-one derivatives (5a–e) has been developed from 1-(1-benzofuran-2-yl)-2-bromoethanone (2),which served as a key intermediate for the synthesis of the title compounds. The reaction of compound 2 with thiourea furnished 4-(1-benzofuran-2-yl)-1,3-thiazol-2-amine 3, which upon further reaction with various aromatic aldehydes, gave Schiff bases 4a–e. These Schiff bases, when treated with thioacetic acid in the presence of catalytic amount of anhydrous ZnCl2, yielded thiazolidinone derivatives 5a–e. All the newly synthesized compounds have been characterized by analytical and spectral data and screened for their antimicrobial and analgesic activity. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file. 相似文献
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M. Nibin Joy Bhaskaran Savitha Ayyiliyath M. Sajith Yadav D. Bodke Talavara Venkatesh K. K. Abdul Khader M. Syed Ali Padusha A. Muralidharan 《中国化学快报》2016,27(1):31-36
A rapid, efficient, and facile synthesis of an assortment of C-2 substituted imidazopyrazines has been achieved by utilizing the palladium catalyzed Suzuki cross-coupling of 2-bromo-1H-imidazo[4,5-b]pyrazine with various boronic acids under microwave irradiation. The utilization of(A-~(ta)phos)_2PdCl_2 as a catalyst in combination with Cs F as base and DME-H_2O(4:1) as the solvent system at 100℃ procured the diaryls in acceptable to excellent yields. Prominent features of this developed methodology include short reaction times, fewer side products, and exceptional tolerance to a wide variety of functional groups. 相似文献
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Bodke Y. D. Shankerrao S. Kenchappa R. Telkar S. 《Russian Journal of General Chemistry》2017,87(8):1843-1849
Russian Journal of General Chemistry - Novel Schiff bases of 2-(1-benzofuran-2-yl)quinoline-4-carboxylic acid derivatives 5a–5e were synthesized by the reaction of... 相似文献
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Veeranna Navaneethgowda P. Bodke Yadav D. Basavaraju Manjunatha Pasha Kuntewale Mohiyouddin Mussuvir 《Structural chemistry》2022,33(3):897-906
Structural Chemistry - The present work describes the synthesis of novel 3-[2-(5-phenyl-1,3-thiazol-2-yl)hydrazinyl]-1,3-dihydro-2H-indol-2-one derivatives 4(a-h) and the characterization of... 相似文献
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Venkatesh K. Bhovi Yadav D. Bodke S. Biradar B. E. Kumara Swamy S. Umesh 《Phosphorus, sulfur, and silicon and the related elements》2013,188(1):110-116
Treatment of 5-bromo-2-acetyl benzofuran with hydrazine followed by condensation of the resulting hydrazone with different quinoline derivatives gave the corresponding Schiff bases. Reaction of these Schiff bases with thioacetic acid furnished the target thiazolidinone molecule. Some of the newly synthesized compounds show promising analgesic and antimicrobial activity. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file. 相似文献
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