180479-95-2Relevant articles and documents
Palladium(II) Acetate-Catalyzed Dual C–H Functionalization and C–C Bond Formation: A Domino Reaction for the Synthesis of Functionalized (E)-Bisindole-2-ones from Diarylbut-2-ynediamides
Li, Guangchen,Zhou, Guangshuai,Zhang-Negrerie, Daisy,Du, Yunfei,Huang, Jianhui,Zhao, Kang
, p. 3534 - 3540 (2016)
A domino reaction of palladium(II)-catalyzed dual C–H functionalization with subsequent intramolecular annulation is presented. This method provides a convenient synthesis of a range of symmetrical and unsymmetrical biologically important (E)-bisindole-2-ones under extremely mild reaction conditions – room temperature, green oxidant and no additive. The reaction mechanism is elucidated in light of the yield values as well as additional control experiment results. (Figure presented.).
Acid-Catalyzed Rearrangements for a Diastereoselective Entry into a New Fused Hexacyclic Heterocycle: (5RS,7aRS,12RS,14aRS)-4,5,7,7a,11,12,14,14a-Octahydro-5,12-dimethyldiindonaphthyridine
Papageorgiou, Christos,Borer, Xaver
, p. 1079 - 1083 (1988)
The title compound 1 was obtained in 10.3percent overall yield via two acid-catalyzed rearrangements and pyrrolidine formation.Thus, bi-oxindole 6 afforded exclusively the thermodynamically stable cis-diazachrysene 7 which, after allylation, followed by aza-Claiser rearrangement gave alcohol 2.Pyrolytic ring clousere of the latter yielded 1 in a highly diastereoselective fashion.
Synthesis of 2-Oxindoles Sharing Vicinal All-Carbon Quaternary Stereocenters via Organocatalytic Aldol Reaction
De, Subhadip,Das, Mrinal Kanti,Roy, Avishek,Bisai, Alakesh
, p. 12258 - 12274 (2016)
An organocatalytic enantioselective aldol reaction using paraformaldehyde as C1-unit has been developed for the synthesis of 2-oxindoles sharing vicinal all-carbon quaternary stereocenters. The methodology is eventually employed in the formal total synthesis of (+)-folicanthine (1b).
Electroactive and photoactive poly[isoindigo-alt-EDOT] synthesized using direct (hetero)arylation polymerization in batch and in continuous flow
Grenier, Fran?ois,A?ch, Badrou Réda,Lai, Yu-Ying,Guérette, Maxime,Holmes, Andrew B.,Tao, Ye,Wong, Wallace W. H.,Leclerc, Mario
, p. 2137 - 2143 (2015)
In this work, a combined approach was used to obtain a low-cost material for organic electronics by focusing on inexpensive monomers, short synthetic pathway, high-yielding polymerization method, low waste, and easy scalability. To achieve this, a new material, poly[isoindigo-alt-3,4-ethylenedioxythiophene], was synthesized using direct (hetero)arylation polymerization (DHAP). Only a few synthetic steps are required to obtain this material, and no organometallic intermediates are used. In order to make a bigger step toward a truly inexpensive technology, continuous flow methods were applied for the first time to DHAP. This method helped solving a common problem encountered in conjugated polymers synthesis, namely, batch-to-batch variations. Electronic properties of this polymeric material were evaluated using field effect transistors (μh = 7 × 10-3 cm2·V-1·s-1) and solar cells (η = 3.0%).
The first synthesis of cis-N,N′-dialkylisoindigo derivatives from 3-indolyl-2-oxindoles with DDQ
Seo, Da Young,Roh, Hwa Jung,Jo, Hwi Yul,Cho, Sung,Kim, Jae Nyoung
, p. 1005 - 1009 (2018)
cis-N,N′-Dialkylisoindigo derivatives were synthesized for the first time by the reaction of 3-indolyl-2-oxindoles with DDQ in aqueous 1,4-dioxane. cis-Isoindigo derivatives were completely isomerized to the corresponding trans-isomers by heating the solu
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Wahl,Bagard
, (1914)
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Method for preparing isoindigo compound by organically catalyzing isatin self-condensation
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Paragraph 0021-0025, (2020/06/20)
The invention discloses a method for preparing an isoindigo compound by organically catalyzing isatin self-condensation, which relates to the technical fields of organic synthesis, dyes, pharmaceutical chemicals, organic photoelectric materials and the li
Gold(I)-Catalyzed Dimerization of 3-Diazooxindoles towards Isoindigos
Yao, Xinbo,Wang, Tao,Zhang, Zunting
supporting information, p. 4475 - 4478 (2018/09/06)
A gold-catalyzed dimerization of 3-diazooxindoles was developed, delivering isoindigos as products. The reaction shows broad substrate scope and functional group tolerance by affording various substituted isoindigos. Moreover, the method also exhibited high efficiency on a gram-scale reaction.
