15482-69-6Relevant academic research and scientific papers
Reaction of chalcones with NBS, a simple one pot synthesis of 2-aroylbenzo[b]furanes
Litkei, Gyoergy,Gulacsi, Katalin,Antus, Sandor,Dinya, Zoltan
, p. 3061 - 3074 (1996)
A simple one pot synthesis of 2-aroylbenzo[b]furanes has been achieved by bromomethoxylation with NBS and subsequent treatment of the appropriately substituted 2-hydroxychalcones with sodium hydroxide.
Synthesis method of benzofuran compound
-
Paragraph 0053-0060; 0062; 0063, (2021/05/19)
The invention belongs to the field of organic chemical synthesis, and particularly relates to a synthesis method of a benzofuran compound. According to the invention, the reaction system adopts economical and efficient iron phthalocyanine as a catalyst, a
Copper(I)-Catalyzed Chemoselective Reduction of Benzofuran-2-yl Ketones to Alcohols with B2pin2 via a Domino-Borylation-Protodeboronation Strategy
Xuan, Qingqing,Kong, Weiguang,Song, Qiuling
, p. 7602 - 7607 (2017/07/26)
A novel copper(I)-catalyzed chemoselective reduction of the carbonyls of benzofuran-2-yl ketones over furan rings with B2pin2 has been developed. This reaction proceeded under mild conditions. High valuable secondary alcohol derivatives of benzofurans were obtained in good to excellent yields with a broad substrate scope. The mechanistic studies suggested that a domino-borylation-protodeboronation pathway was involved in this reaction.
Intramolecular oxidative coupling: I2/TBHP/NaN3-mediated synthesis of benzofuran derivatives
Xu, Wengang,Li, Qingcui,Cao, Chuanpeng,Zhang, Fanglin,Zheng, Hua
, p. 6158 - 6161 (2015/06/08)
A novel intramolecular oxidative coupling reaction has been established to prepare benzofuran derivatives via direct C(sp2)-H functionalization for the formation of C-O bond. This transformation is mediated by I2/TBHP/NaN3 under metal-free conditions and a catalytic amount of NaN3 plays a crucial role in the reaction. Furthermore, the reaction tolerates a broad substrate scope with average to excellent yields.
Synthesis and antitubercular activity of 4-thiazolidinone derivatives incorporating benzofuran moiety
Basawaraj, Raga,Channamma,Sangmeshwar
, p. 59 - 66 (2019/01/21)
5-Bromo-1-benzofuran-2-yl(substituted phenyl) methanones (2a-e) were prepared by the reaction of 2-bromo-1-(phenyl) ethanones and 5-bromosalicylaldehyde in dimethylformamide in the presence of anhydrous potassium carbonate to maintain basic condition. Con
Reaction products of 5-bromobenzofuran-2-yl-aryl methanone and their antimicrobial activities
Ali, Syed Sarfraz,Channamma,Basawaraj, Raga
, p. 189 - 196 (2019/01/21)
5-Bromobenzofuran-2-yl-aryl methanones (2a-e) were obtained by the reaction of 5-bromosalicylaldehyde 1 with 2-bromo-1-(aryl) ethanones. The condensation of compounds (2a-e) with hydroxylamine hydrochloride, thiosemicarbazide and aromatic amine such as an
DMAP-catalyzed cascade reaction: One-pot synthesis of benzofurans in water
Shang, Yongjia,Wang, Cuie,He, Xinwei,Ju, Kai,Zhang, Min,Yu, Shuyan,Wu, Jiaping
experimental part, p. 9629 - 9633 (2011/01/03)
A series of benzofurans were efficiently synthesized in good to excellent yields using 4-dimethylaminopyridine (DMAP) catalyzed cascade reaction between salicylaldehydes and halogenated ketones in water at 80 °C opened atmosphere.
An expedient synthesis of enantioenriched substituted (2-benzofuryl) arylcarbinols via tandem Rap-Stoermer and asymmetric transfer hydrogenation reactions
Kumaraswamy, Gullapalli,Ramakrishna, Gajula,Raju, Ragam,Padmaja, Mogilisetti
experimental part, p. 9814 - 9818 (2011/02/22)
An expedient synthesis of enantioenriched substituted (benzofuran-yl)-aryl and heteroaryl carbinols, is described. A key feature of this protocol is synthesis of functionally varied benzofuran scaffolds via a Rap-Stoermer reaction/catalytic asymmetric tra
Microwave-mediated solvent free Rap-Stoermer reaction for efficient synthesis of benzofurans
Rao, Maddali L.N.,Awasthi, Dheeraj K.,Banerjee, Debasis
, p. 431 - 434 (2008/02/03)
The Rap-Stoermer reaction of salicylaldehydes with diverse phenacyl bromide and phenacyl iodides proceeded cleanly to afford various functionalized benzofurans in excellent yields under base-mediated solvent free microwave irradiation conditions.
Synthesis of 2-, 4- And 5-(2-alkylcarbamoyl-l-methylvinyl)-7- alkyloxybenzo[b]furans and their leukotriene 64 receptor antagonistic activity
Ando, Kumiko,Tsuji, Eriko,Ando, Yuko,Kunitomo, Jun-Ichi,Kobayashi, Reina,Yokomizo, Takehiko,Shimizu, Takao,Yamashita, Masayuki,Ohta, Shunsaku,Nabe, Takeshi,Kohno, Shigekatsu,Ohishi, Yoshitaka
, p. 2129 - 2139 (2007/10/03)
Variable benzo[6]furan derivatives having (E)- and (Z)-2-alkylcarbamoyl-l- methylvinyl groups at the 2-, 4- and 5-positions and a carboxylpropoxy or (1-phenyl)ethoxy group at the 7-position were prepared to find novel and selective leukotriene B4 (LTB4) receptor antagonists. (E)-2-(2-Diethylcarbamoyl- l-methylvinyl)-7-(1-phenylethoxy)benzo[b]furan (4v) showed selective inhibition to the human BLT2 receptor (hBLT2). On the other hand, (E)-2-acetyl-4-(2-diethylcarbamoyl-l-methylvinyl)-7-(l-phenylethoxy)benzo[b] furan (7v) inhibited both human BLTi receptor (hBLT1) and hBLT 2. The (E)-2-(2-diethylcarbamoyl-l-methylvinyl) group lay on approximately the same plane as the benzo[e]furan ring, whereas the (E)-4-(2-diethylcarbamoyl-l-methylvinyl) group had the torsion angle (45.7°) from the benzo[e]furan ring plane. However, the (Z)-(2-alkylcarbamoyl-l- methylvinyl)benzo[b]furans were inactive. The inhibitory activity depended on the conformation of the 2-diethylcarbamoyl-l-methylvinyl group. The Royal Society of Chemistry 2005.
