Clauson–Kaas pyrrole synthesis using diverse catalysts: a transition from conventional to greener approach

• Dileep Kumar Singh and
• Rajesh Kumar

Beilstein J. Org. Chem. 2023, 19, 928–955, doi:10.3762/bjoc.19.71

• the presence of NaOAc under an AcOH/H2O mixture at 75 °C in 2.5 h (Scheme 4). Further, these synthesized N-α-substituted compounds were subjected to electropolymerization studies. In another method described for the synthesis of N-substituted pyrroles 11, Fang et al. [58] used phosphorus pentoxide

A review of asymmetric synthetic organic electrochemistry and electrocatalysis: concepts, applications, recent developments and future directions

• Munmun Ghosh,
• Valmik S. Shinde and
• Magnus Rueping

Beilstein J. Org. Chem. 2019, 15, 2710–2746, doi:10.3762/bjoc.15.264

• be used for the chemical modification of electrodes to achieve asymmetric induction in electrosynthesis [25][26]. They showed that carbon electrodes modified with poly[RuIII(L)2Cl2]+ (generated from the electropolymerization of [RuIII(L)2Cl2]+ complexes 19 on the carbon surface) can effectively

Selenophene-containing heterotriacenes by a C–Se coupling/cyclization reaction

• Pierre-Olivier Schwartz,
• Sebastian Förtsch,
• Astrid Vogt,
• Elena Mena-Osteritz and
• Peter Bäuerle

Beilstein J. Org. Chem. 2019, 15, 1379–1393, doi:10.3762/bjoc.15.138

• 3/DSS 4 (28,400 to 20,830 L mol−1 cm−1). No fluorescence was observed for each of the four heteroacenes DTT 1 to DSS 4 neither in DCM nor in THF. Electrochemical properties and electropolymerization The redox properties of the heterotriacenes 1–4 were investigated by means of cyclic voltammetry in

• oxidatively polymerized to polythiophenes [48][49][50] or polyselenophenes [51], respectively, we were interested in the electropolymerization of heterotriacenes 1–4 to the corresponding conjugated polymers P1–P4. Hence, monomers 1–4 were subjected to potentiodynamic polymerization in dichloromethane/TBAPF6

• as electrolyte and the redox and optical properties of the obtained films were determined. Electropolymer P(DTT) P1 has already been reported in literature and the findings agree well with our results [46][51]. In Figure 8, exemplarily the electropolymerization of heterotriacene DST 2 (left) and

A versatile route to polythiophenes with functional pendant groups using alkyne chemistry

• Xiao Huang,
• Li Yang,
• Rikard Emanuelsson,
• Jonas Bergquist,
• Maria Strømme,
• Martin Sjödin and
• Adolf Gogoll

Beilstein J. Org. Chem. 2016, 12, 2682–2688, doi:10.3762/bjoc.12.265

• alkyne chemistry. Its usefulness is demonstrated by a series of functionalized polythiophene derivatives that were obtained by pre- and post-electropolymerization transformations, provided by the synthetic ease of the Sonogashira coupling and click chemistry. Keywords: electropolymerization; functional

A new approach to ferrocene derived alkenes via copper-catalyzed olefination

• Vasily M. Muzalevskiy,
• Aleksei V. Shastin,
• Alexandra D. Demidovich,
• Namiq G. Shikhaliev,
• Abel M. Magerramov,
• Victor N. Khrustalev,
• Rustem D. Rakhimov,
• Sergey Z. Vatsadze and
• Valentine G. Nenajdenko

Beilstein J. Org. Chem. 2015, 11, 2072–2078, doi:10.3762/bjoc.11.223

• we assume that the radical-ions formed after the first electron transfer would enter the intramolecular cyclization reaction involving the second adjacent double bond with subsequent electropolymerization. The latter is confirmed by a pronounced decrease in current values (3–4 times) as compared to

IR and electrochemical synthesis and characterization of thin films of PEDOT grown on platinum single crystal electrodes in [EMMIM]Tf₂N ionic liquid

• Andrea P. Sandoval,
• Marco F. Suárez-Herrera and
• Juan M. Feliu

Beilstein J. Org. Chem. 2015, 11, 348–357, doi:10.3762/bjoc.11.40

• previously reported [20]. Polymer films were grown under galvanostatic conditions (unless otherwise stated) by applying a current density of 0.124 mA cm−2 during 5, 10, 25, 35 or 50 s in a solution of 0.1 M 3,4-ethylenedioxythiophene (EDOT, Sigma-Aldrich 97%). After the electropolymerization, the PEDOT films

Functionalized branched EDOT-terthiophene copolymer films by electropolymerization and post-polymerization “click”-reactions

• Miriam Goll,
• Adrian Ruff,
• Erna Muks,
• Felix Goerigk,
• Beatrice Omiecienski,
• Ines Ruff,
• Rafael C. González-Cano,
• Juan T. Lopez Navarrete,
• M. Carmen Ruiz Delgado and
• Sabine Ludwigs

Beilstein J. Org. Chem. 2015, 11, 335–347, doi:10.3762/bjoc.11.39

• films from water contact angles of 140° down to 40°. Keywords: band-gap engineering; “click”-chemistry; conducting polymers; electropolymerization; Raman spectroscopy; surface functionalization; Introduction The many different applications of conducting polymers demand for tailored properties

• widely used approach is the introduction of different co-monomers to build up copolymers, e.g., new donor–acceptor low band gap copolymers [12][13][14]. Among synthetic approaches electropolymerization has gained particular attention, because it allows easy tuning of polymer film properties by

• modification of the monomers. In addition to electropolymerization of simple conjugated monomers [15] more complex monomers which include different building blocks were presented. Roncali et al. used for example EDOT containing branched thiophene monomers [16][17]. In some of the more complex monomer systems