13054-95-0Relevant academic research and scientific papers
Synthesis of Conformationally Restricted 2,3-Diarylbenzo[b]furan by the Pd-Catalyzed Annulation of o-Alkynylphenols: Exploring a Combinatorial Approach
Hu, Youhong,Nawoschik, Kenneth J.,Liao, Yun,Ma, Jian,Fathi, Reza,Yang, Zhen
, p. 2235 - 2239 (2004)
The palladium/bpy-catalyzed annulation of o-alkynylphenol with various aryl halides to generate diversified 2,3-diarylbenzo[b]furan is herein described. This method provides an efficient synthetic pathway for the combinatorial synthesis of conformationally restricted 2,3-diarylbenzo[b]furan for drug discovery.
Direct Observation and Reactivities of Benzoyl- and Methoxycarbonyldiphenylmethyl Cations
Hopkinson, Alan C.,Dao, Le H.,Duperrouzel, Paul,Maleki, Mehran,Lee-Ruff, Edward
, p. 727 - 728 (1983)
13C N.m.r. spectra, rates of decomposition, and reaction products are reported for the methoxycarbonyldiphenylmethyl and benzoyldiphenylmethyl cations in ClSO3H-CHCl3.
C-C bond formation via double C-H functionalization: Aerobic oxidative coupling as a method for synthesizing heterocoupled biaryls
Dwight, Timothy A.,Rue, Nicholas R.,Charyk, Dagmara,Josselyn, Ryan,DeBoef, Brenton
, p. 3137 - 3139 (2007)
The aerobic oxidative coupling of arenes such as benzofuran and N-substituted indoles with benzene and derivatives thereof is described. The reaction is shown to take place in both inter- and intramolecular scenarios.
Palladium-catalyzed cross-coupling of benzyl ketones and α,β- unsaturated carbonyl and phenolic compounds with o-dibromobenzenes to produce cyclic products
Terao, Yoshito,Satoh, Tetsuya,Miura, Masahiro,Nomura, Masakatsu
, p. 2345 - 2350 (1999)
A number of carbonyl and phenolic compounds efficiently couple with o- dibromobenzenes in the presence of a palladium catalyst and a base to give the corresponding oxygen-containing heterocycles or carbocyclic compounds. Thus, from the reactions of benzyl phenyl ketones, 1-naphthols, and α,β- unsaturated aldehydes and ketones, benzofuran, benzopyran, benzocyclobutane, and indene derivatives, respectively, are produced selectively via the successive formation of C-C and C-O bonds or of two C-C bonds.
Synthesis of benzofurans from the cyclodehydration of α-phenoxy ketones mediated by Eaton’s reagent
Ma, Lin,Ma, Zhanwei,Zhang, Min,Zhou, Min
, p. 426 - 436 (2020/03/23)
Cyclodehydration of α-phenoxy ketones promoted by Eaton’s reagent (phosphorus pentoxide–methanesulfonic acid) is used to prepare 3-substituted or 2,3-disubstituted benzofurans with moderate to excellent yields under mild conditions. The method provides a facile access to benzofurans from readily available starting materials such as phenols and α-bromo ketones. The reaction is highly efficient, which is attributed to the good reactivity and fluidity of Eaton’s reagent. The reaction can be applied to prepare naphthofurans, furanocoumarins, benzothiophenes, and benzopyrans.
Discovery of 4,6-bis(benzyloxy)-3-phenylbenzofuran as a novel Pin1 inhibitor to suppress hepatocellular carcinoma via upregulating microRNA biogenesis
Fan, Xin,He, Huaiyu,Li, Jiao,Luo, Guoyong,Zheng, Yuanyuan,Zhou, Jian-Kang,He, Juan,Pu, Wenchen,Zhao, Yun
, p. 2235 - 2244 (2019/04/30)
Peptidyl-prolyl cis-trans isomerase NIMA-interacting 1 (Pin1)participates in diverse cancer-associated signaling pathways, playing an oncogenic role in multiple human cancers, including hepatocellular carcinoma (HCC). Our recent works clarify that Pin1 modulates miRNAs biogenesis by interacting with ERK-phosphorylated exportin-5 (XPO5)and changing XPO5 conformation, giving a potential target for HCC treatment. Herein, we discover 4,6-bis(benzyloxy)-3-phenylbenzofuran (TAB29)as a novel Pin1 inhibitor that targets Pin1 PPIase domain. TAB29 potently inhibits Pin1 activity with the IC50 value of 874 nM and displays an excellent selectivity toward Pin1 in vitro. Cell-based biological evaluation reveals that TAB29 significantly suppresses cell proliferation of HCC cells through restoring the nucleus-to-cytoplasm export of XPO5 and upregulating mature miRNAs expression. Collectively, this work provides a promising small molecule lead compound for Pin1 inhibition, highlighting the therapeutic potential of miRNA-based treatment for human cancers.
Iridium-Catalyzed Aerobic Coupling of Salicylaldehydes with Alkynes: A Remarkable Switch of Oxacyclic Product
Yamane, Shintaro,Hinoue, Tomoaki,Usuki, Yoshinosuke,Itazaki, Masumi,Nakazawa, Hiroshi,Hayashi, Yoshihiro,Kawauchi, Susumu,Miura, Masahiro,Satoh, Tetsuya
supporting information, p. 7852 - 7855 (2018/05/08)
The iridium(III)/copper(II)-catalyzed dehydrogenative coupling of salicylaldehydes with internal alkynes proceeds efficiently under atmospheric oxygen through aldehyde C?H bond cleavage and decarbonylation. A variety of benzofuran derivatives can be synthesized by the environmentally benign procedure. DFT calculations suggest that this unique transformation involves the facile deinsertion of CO in the key metallacycle intermediate, which is in marked contrast to the corresponding rhodium(III) catalysis that leads to CO-retentive chromone derivatives.
Acid-promoted furan annulation and aromatization: An access to benzo[b]furan derivatives
Ao, Jun,Liu, Yidong,Jia, Shiqi,Xue, Lu,Li, Dongmei,Tan, Yu,Qin, Wenling,Yan, Hailong
, p. 433 - 440 (2018/01/03)
An unprecedented PTSA-promoted furan annulation and aromatization in one pot has been developed. This process offers a simple and efficient synthetic route for the construction of various highly substituted benzo[b]furan derivatives, which are widely used not only in drug active molecules but also organic semiconductor and organic light-emitting devices. The preliminary mechanism study indicated this transformation proceeded sequentially via furan annulation and aromatization.
Photoinduced Gold-Catalyzed Domino C(sp) Arylation/Oxyarylation of TMS-Terminated Alkynols with Arenediazonium Salts
Alcaide, Benito,Almendros, Pedro,Busto, Eduardo,Lázaro-Milla, Carlos
, p. 2177 - 2186 (2017/02/26)
A selective and convenient synthesis of tri- and tetrasubstituted α,β-unsaturated ketones, as well as 2,3-diarylbenzofurans has been developed with the aid of light and taking advantage of a cooperative gold/photoredox-catalyzed 2-fold arylation reaction of TMS-terminated alkynols. The reaction of 3-(trimethylsilyl)prop-2-yn-1-ols was competent to generate diarylated α,β-unsaturated ketones; whereas the photoredox sequence involving 2-[(trimethylsilyl)ethynyl]phenol exclusively afforded 2,3-diarylbenzofurans. The reaction of terminal alkynes proceeded in poor yields while the use of bulkier silyl groups, such as TIPS, resulted unproductive. Apparently, the C(sp) arylation reaction is the first event on the domino bis-arylative sequence. These results could be explained through the intermediation of arylgold(III) species and several single electron transfer processes.
Au-catalyzed synthesis of benzofurans from phenols and alkynes using molecular oxygen
Liao, Jinqiang,Guo, Pengfeng,Chen, Qinlin
, p. 22 - 25 (2016/02/19)
An efficient Au-catalyzed transformation for the synthesis of benzofurans from phenols and alkynes using molecular oxygen has been developed. The reaction proceeds smoothly with commercially available, eco-friendly oxidant and affords the products in moderate to good yields. This reaction is a facile approach for the formation of C - C and C-O bonds.
