34128-30-8Relevant articles and documents
Direct Carboxylation of Electron-Rich Heteroarenes Promoted by LiO-tBu with CsF and [18]Crown-6
Shigeno, Masanori,Hanasaka, Kazuya,Sasaki, Keita,Nozawa-Kumada, Kanako,Kondo, Yoshinori
supporting information, p. 3235 - 3239 (2019/02/13)
We herein demonstrate that the combination of LiO-tBu, CsF, and [18]crown-6 efficiently promotes the direct C?H carboxylation of electron-rich heteroarenes (benzothiophene, thiophene, benzofuran, and furan derivatives). A variety of functional groups, including methyl, methoxy, halo, cyano, amide, and keto moieties, are compatible with this system. The reaction proceeds via the formation of a tert-butyl carbonate species.
Supramolecular control of selectivity in hydroformylation of vinyl arenes: Easy access to valuable β-aldehyde intermediates
Dydio, Pawel,Reek, Joost N. H.
supporting information, p. 3878 - 3882 (2013/05/09)
Go against the flow! A rationally designed regioselective hydroformylation catalyst, [Rh/L], in which noncovalent ligand-substrate interactions allow the unprecedented reversal of selectivity from the typical α-aldehyde to the otherwise unfavored product β-aldehyde, is reported. This catalytic system opens up novel and sustainable synthetic pathways to important intermediates for the fine-chemicals industry.
Synthesis and biological evaluation of 2-(alkoxycarbonyl)-3-anilinobenzo[b] thiophenes and thieno[2,3-b]pyridines as new potent anticancer agents
Romagnoli, Romeo,Baraldi, Pier Giovanni,Kimatrai Salvador, Maria,Preti, Delia,Aghazadeh Tabrizi, Mojgan,Bassetto, Marcella,Brancale, Andrea,Hamel, Ernest,Castagliuolo, Ignazio,Bortolozzi, Roberta,Basso, Giuseppe,Viola, Giampietro
, p. 2606 - 2618 (2013/05/09)
Two new series of inhibitors of tubulin polymerization based on the 2-(alkoxycarbonyl)-3-(3′,4′,5′-trimethoxyanilino)benzo[b] thiophene and thieno[2,3-b]pyridine molecular skeletons were synthesized and evaluated for antiproliferative activity on a panel
Design and synthesis of condensed thienocoumarins by Suzuki-Miyaura reaction/lactonization tandem protocol
Iaroshenko, Viktor O.,Ali, Sajid,Mkrtchyan, Satenik,Gevorgyan, Ashot,Babar, Tariq Mahmood,Semeniuchenko, Volodymyr,Hassan, Zahid,Villinger, Alexander,Langer, Peter
, p. 7135 - 7139 (2013/01/15)
A concise and efficient approach to a series of chromen-4-ones with fused thiophene ring has been developed using the Suzuki-Miyaura reaction of bromothiophene-2- and 3-carboxylates with 2-methoxyboronic acids and subsequent cyclization of prepared alkyl (2-methoxy)aryl thiophene-2- and 3-carboxylates under the action of BBr3/KOtBu. Starting bromothiophenes are easily obtained from corresponding commercially available aminothiophenes by diazotization/bromination reaction.
Synthesis of new benzo[b]thieno fused ring systems via transition metal-mediated cyclisations
Mbere, Johana M.,Bremner, John B.,Skelton, Brian W.,White, Allan H.
experimental part, p. 6895 - 6900 (2011/10/02)
The compact synthesis of a new ring fused benzo[b]thieno derivative with an embedded nine-membered ring system via ring closing metathesis methodology is described. The preparation of the novel 11H-benzo[b]thieno[2,3-c]pyrrolo[2,3-a] indol-11-one via palladium-mediated oxidative cyclisation of benzo[b]thien-2-oyl indole derivatives is also reported.
MODULATORS OF 5-HT RECEPTORS AND METHODS OF USE THEREOF
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Page/Page column 159, (2010/12/18)
The present application relates to aryl- and heteroaryl-fused decahydropyrroloazepine, octahydrooxepinopyrrole, octahydropyrrolothiazepine dioxide, decahydrocyclohepta[c]pyrrole, and octahydrocyclohepta[c]pyrrole derivatives of formula (I), wherein R1,R2, R3, R4, R5, A, Y1, Y2, and Y3 are as defined in the specification. The present application also relates to compositions comprising such compounds, processes for making such compounds, and methods of treating disease conditions using such compounds and compositions, and methods for identifying such compounds.
Synthesis of novel 3-(aryl)benzothieno[2,3-c]pyran-1-ones from Sonogashira products and intramolecular cyclization: Antitumoral activity evaluation
Queiroz, Maria-Joao R.P.,Calhelha, Ricardo C.,Vale-Silva, Luis A.,Pinto, Eugenia,Sao-Jose Nascimento
experimental part, p. 1893 - 1899 (2009/09/30)
Several novel 3-(aryl)benzothieno[2,3-c]pyran-1-ones (tricyclic lactones) were prepared either by a tandem one-pot Sonogashira coupling and intramolecular cyclization, reacting the 3-bromobenzo[b]thiophene-2-carboxylic acid with arylacetylenes, or by Sono
TREATMENT OF PROTEIN FOLDING DISORDERS
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Page/Page column 103, (2010/11/25)
In certain embodiments, the invention is directed to a method for treating a protein folding disorder such as Alzheimer's disease, dementia, Parkinson's disease, Huntington's disease and prion-based spongiform encephalopathy. The method comprises the administration to a subject of a compound of the formula (I) wherein A and B are independently a mono- or bicyclic aromatic group or heteroaromatic cyclic group. In preferred embodiments, the compounds are bis-indole compounds.
HETEROCYCLIZATION OF ACETYLENE DERIVATIVES BY THE ACTION OF SULFUR DIOXIDE AND HYDROGEN BROMIDE
Zborovskii, Yu. L.,Smirnov-Zamkov, I. V.,Staninets, V. I.
, p. 1617 - 1625 (2007/10/02)
Under the influence of sulfur dioxide and hydrogen bromide acetylenes activated by strong electron-withdrawing substituents undergo oxidative-reductive heterocyclization, leading to the formation of heterocyclic systems containing sulfide sulfur.The hydrogen bromide acts as reducing agent in these processes.The released bromine oxidizes the excess of sulfur dioxide to sulfuric acid.The reaction takes place by a heterolytic donor-acceptor mechanism.The addition of hydrogen bromide and sulfur dioxide to the CC bond evidently gives sulfinic acids, which are thenreduced to sulfenyl bromides.In the case of phenylacetylene derivatives intramolecular cyclization of the sulfenyl bromides leads to the formation of benzothiophenes.The dicyanoacetylene and acetylenedicarboxamide are converted into the corresponding isothiazoles.The heterocyclization of two molecules of sulfenyl bromide leads to the formation of 1,4-dithiin derivatives.