Results 131 to 140 of about 1,568 (180)

Pyrrole-contained fused-ring compounds

Journal of Porphyrins and Phthalocyanines, 2023
Three series of pyrrole-contained fused ring compounds are summarized. In recent years, these compounds attracted wide attention with their special and elegant structures. Furthermore, they have played important roles in new optoelectronic materials and guest receptors due to their excellent photoelectric effects and unique properties with nitrogen ...
Zhi-Ao Li, Li-Jun Peng, Xin-Yue Wang, Han-Yuan Gong   +3 more
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Heteroheptacenes with Fused Thiophene and Pyrrole Rings

Chemistry – A European Journal, 2010
AbstractThe preparation of conjugated heteroheptacenes using an electrophilic coupling reaction induced by a super acid is reported. The new molecules containing thiophene and/or pyrrole rings are bisbenzo[b,b′]thienodithieno[3,2‐b:2′,3′‐d]pyrrole, bisbenzo[b,b′]thienocyclopenta[2,1‐b:3,4‐b′]dithiophene, and bisthieno[3,2‐b]thieno[2,3‐f:5,4‐f ...
Gao, P., Cho, D., Yang, X., Enkelmann, V., Baumgarten, M., Müllen, K.   +5 more
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Recent synthetic journey on pyrrole-fused compounds

New Journal of Chemistry, 2023
Pyrroles and their fused compounds are widely known as biologically active scaffolds, which are mainly fused at the 1–2 (a), 2–3 (b), 3–4 (c) and 4–5 (d) positions.
Chandana Pramanik, Paritosh Barik, Sk Asraf Ali, Dipti Sovamayee Nayak, Mohammed Ikbal, Arabinda Mandal, Rathin Jana, Soumen Giri, Shubhankar Samanta   +8 more
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Synthesis and Evaluation of Cytotoxic Activity of Some Pyrroles and Fused Pyrroles

Anti-Cancer Agents in Medicinal Chemistry, 2017
Pyrrole derivatives represent a very interesting class as biologically active compounds. The objective of our study was to investigate the cytotoxic and apoptotic effects and antioxidant activity of the newly synthesized pyrrole derivatives.A series of novel pyrroles and fused pyrroles (tetrahydroindoles, pyrrolopyrimidines, pyrrolopyridines and ...
Samar S, Fatahala, Mosaad S, Mohamed, Mahmoud, Youns, Rania H, Abd-El Hameed   +3 more
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Regioselective synthesis of pentathiepino-fused pyrroles and indoles

Mendeleev Communications, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Lidia S. Konstantinova, Oleg A. Rakitin, Charles W. Rees, Stanislav A. Amelichev   +3 more
openaire   +1 more source

Electrochemical studies of fused-pyrrole systems

Synthetic Metals, 1987
Abstract An electrochemical study of fused pyrroles, i.e. , 1,4-dihydropyrrolo-[3,2-b]pyrrole (PP), 3,6-di-t-butyl-1,4-dihydropyrrolo[3,2-b]pyrrole (BPP) and dimethyl 1,4-dihydro-3,6-di-t-butyl-pyrrolo[3,2-b]pyrrole-1,4-dicarboxylate (BMPP), was carried out. PP could be polymerized electrochemically on InSn oxide conducting glass (ITO), basal-plane
N.Oyama, T.Ohsaka, K.Chiba, H.miyamoto, T.Mukai, S.Tanaka, T.Kumagai   +6 more
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Synthesis and Redox Properties of Pyrrole- and Azulene-Fused Azacoronene

Organic Letters, 2019
Synthesis of an azacoronene, in which both pyrrole and azulene moieties are circularly fused, was achieved just in three steps. This new azacoronene exhibited multistep reversible oxidations under electrochemical and chemical conditions. Formation of an aromatic 22π-electron conjugation and a tropylium cation (6π-electron conjugation) in the dicationic
Yoshiki Sasaki, Masayoshi Takase, Tetsuo Okujima, Shigeki Mori, Hidemitsu Uno   +4 more
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The synthesis of polycyclic benz‐fused pyrroles

Journal of Heterocyclic Chemistry, 1980
AbstractPyrrolo[1,2‐f]phenanthridine (2), benzo[f]pyrrolo[2,1‐a]isoquinoline (3), 5,6,7,8,9,10,11‐hexahydrobenzo[g]pyrrolo[2,1‐a]isoquinoline (5), and pyrrolo[2,1‐a]isoquinoline (6) dicarboxylic acid diesters were prepared in 1,3‐dipolar cycloaddition reactions between dimethyl acetylenedicarboxylate and the hydrofluoroborate salt of the appropriate ...
Wayne K. Anderson, Howard L. Mcpherson, James S. New   +2 more
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A facile route to pyrroles, isoindoles and hetero fused analogues

Journal of the Chemical Society, Perkin Transactions 1, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
Christopher D. Gabbutt, John D. Hepworth, B. Mark Heron, Samantha L. Pugh   +3 more
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Pyrrole-Fused Azacoronene Analog with Sulfur Embedded in the Outer Periphery

The Journal of Organic Chemistry, 2023
The synthesis of sulfur-embedded hexapyrrolohexaazacoronene (HPHAC) analog 2 and its corresponding desulfurized and rearranged compounds was achieved from tetrafluoroisothianaphthene. Structures of all the new π-skeletons were determined by X-ray crystallography.
Masayoshi Takase, Aiki Sagawa, Shigeki Mori, Tetsuo Okujima, Hidemitsu Uno   +4 more
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