Results 141 to 150 of about 1,568 (180)
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Electropolymerization of fused pyrroles as new heteroaromatic polymers
Synthetic Metals, 1989Abstract The electro-oxidative polymerization of fused pyrroles+, i.e., DMPP[3,2-b] and PP[2,3-b] in acetonitrile solutions led to the formation of brown-black, polymeric films+ (poly-DMPP[3,2-b] and poly-PP[2,3-b]) on the electrode surfaces. Both films showed reversible, well-defined oxidation-reduction responses in both acetonitrile and aqueous ...
N.Oyama +7 more
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A General Synthesis of Pyrroles and Fused Pyrrole Systems from Ketones and Amino Acids
The Journal of Organic Chemistry, 1996The lithium enolates of ketones react with BOC-α-amino aldehydes and BOC-α-amino ketones to afford aldol intermediates that cyclize under acidic conditions to yield pyrroles. The BOC-amino aldehydes and ketones are readily available from α-amino acids.
Pamela Nagafuji, Mark Cushman
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A new synthesis of pyrroles fused with polycyclic skeletons
Journal of the Chemical Society, Perkin Transactions 1, 1997The Diels–Alder reaction of β-sulfonylnitroethylene with cyclopentadiene, cyclohexadiene or substituted anthracenes followed by treatment with ethyl isocyanoacetate in the presence of DBU gives pyrroles fused with bicyclo[2.2.1]heptadiene and bicyclo[2.2.2]octadiene skeletons, or triptycene-types of pyrrole, respectively, which are precursors for novel
Satoshi Ito +2 more
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Expeditious Synthesis of Imidazole‐ and Pyrrole‐Fused Benzodiazocines
European Journal of Organic Chemistry, 2010AbstractA straightforward strategy for the synthesis of imidazole‐fused benzodiazocine from 1‐(2‐nitrophenyl)‐1H‐imidazole‐2‐carbaldehyde via Morita–Baylis–Hillman reaction followed by reductive intramolecular cyclization is described. Alternatively the Horner–Wadsworth–Emmons reaction of this substrate with triethyl phosphonoacetate yielded (E)‐ethyl ...
Amita Mishra, Sanjay Batra
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Fused Thiophene‐Pyrrole‐Containing Ring Systems up to a Heterodecacene
Angewandte Chemie International Edition, 2015AbstractA new class of π‐conjugated polycyclic hydrocarbons that promises interesting electronic properties is presented. The synthesis and extension of the S,N‐heteroacene series consisting of only five‐membered heterocyclic rings up to a very long, stable, and still soluble decacene SN10 is realized by multiple Pd‐catalyzed aminations of halogenated ...
Christoph, Wetzel +5 more
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Regioselective synthesis of pentathiepines fused with pyrrole, thiophene, or indole rings
Russian Chemical Bulletin, 2006AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
L. S. Konstantinova +2 more
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An approach to the synthesis of novel pyrrole fused heterocycles
2020Pirol ve pirol türevleri doğada sıkça bulunmaları ve gösterdikleri biyolojik aktiviteler nedeni ile organik sentezin önemli yapı bloklarıdır. Yapısında pirol içeren heterosiklik bileşiklerin elektrofilik halkalaşma reaksiyonları ile sentezi literatürde yer alan önemli ve etkili proseslerdendir. Bu çalışmada, N-alkinil-2-fenil-sübstütiye pirol türevleri
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Pyrroles and Fused Pyrroles: Synthesis and Therapeutic Activities
Mini-Reviews in Organic Chemistry, 2013Mosaad Mohamed, Samar Fathallah
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Pyrrole-Sharing Fused Hybrids of Porphyrins and N-Confused Azaporphyrins
Organic Lettersmeso-(α-Amino)tripyrrin-substituted NiII porphyrin, which was prepared by the substitution reaction of meso-ZnII-(α-chloro)tripyrrin-substituted NiII porphyrin with ammonia and subsequent demetalation, served as a key intermediate to provide pyrrole-sharing fused hybrids of NiII porphyrin and PdII N-confused (NC) azaporphyrin and NiII porphyrin and NC ...
Li Liu +9 more
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