Results 151 to 160 of about 1,317 (206)

Overview of Synthesis and Pharmacological Importance of Imidazole‐Based Polyheterocycles

ChemistrySelect
Imidazole, a privileged heterocyclic scaffold, is widely incorporated into clinically used drugs and natural products due to its ability to engage in hydrogen bonding, π–π stacking, and coordination with metal ions.
Pragati Kushwaha
semanticscholar   +1 more source

CHAPTER 14. Alternating Polyheterocycles

2013
A series of π-conjugated alternating polymers containing heterocycles are reviewed in this chapter. Heteroles (heterocyclopentadienes) with boron, silicon, germanium, phosphorus, and transition metals are the main focus. In the former part, the characteristics and applications of these polymers are explained, focusing on the optical and electronic ...
Kazuo Tanaka, Yoshiki Chujo
openaire   +1 more source

Asymmetric Carbene-Alkyne Metathesis-mediated Cascade: Synthesis of Benzoxazine Polychiral Polyheterocycles and Discovery of a Novel Pain Blocker.

Angewandte Chemie
This study introduces a novel approach for synthesizing Benzoxazine-Centered Polychiral Polyheterocycles (BPCPHCs) via an innovative asymmetric carbene-alkyne metathesis-triggered cascade.
Shuhao Liu, Haoyi Yang, Jirong Shu, Linna Wu, Yukai Li, Zhijing Zhang, Weijie Guo, Shuxian Cai, Fuyi Li, Wenjiang Liu, Shikun Jia, Song Cai, Taoda Shi, Wenhao Hu   +13 more
semanticscholar   +1 more source

Stability studies of electrically conducting polyheterocycles

Synthetic Metals, 1991
Abstract The stability of the electrical conductivity of two types of polyheterocycles, the poly(3-alkylthiophenes) and polypyrrole, was examined under systematically controlled environmental and thermal conditions. The conductivity stability of the polypyrroles was found to be significantly better than that of the poly(3-alkylthiophenes ...
Yading Wang, M.F. Rubner, L.J. Buckley
openaire   +1 more source

Synthesis of Polyheterocyclic Nitrogen-Containing Marine Natural Products

Monatshefte f�r Chemie / Chemical Monthly, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
David Fernandez, Abderaouf Ahaidar, Gerardo Danelon, Pablo Cironi, Marta Marfil, Olga Perez, Carmen Cuevas, Fernando Albericio, John A. Joule, Mercedes Alvarez   +9 more
openaire   +1 more source

Systematic Photoassisted Access to Designer Polyheterocycles via Modular Blocks and Scaffolding.

Organic Letters
Diverse polyheterocycles are accessed via scaffolded photoassisted synthesis involving decarboxylative aromatization of the primary photoproducts from intramolecular cycloadditions of azaxylylenes and tethered heteroaromatic unsaturated pendants.
Tina A Holt, Ivan M. Novitskiy, A. Kutateladze   +2 more
semanticscholar   +1 more source

ChemInform Abstract: Synthesis of Novel Polyheterocycles.

ChemInform, 2001
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Amina Hassikou, Ghita Amine Benabdallah, Mohammed Naceur Dinia, Khalid Bougrin, Mohamed Soufiaoui   +4 more
openaire   +1 more source

Synthesis of Structurally Diverse and Biologically Promising Polyheterocycles Involving Benzo[a]phenazin-5-ols

Current organic chemistry
Nowadays, polyheterocyclic moieties are playing an important role in drug discovery. Many natural products contain a wide variety of polyheterocycles.
B. Banerjee, Arvind Singh, A. Priya, M. Kaur, Aditi Sharma   +4 more
semanticscholar   +1 more source

Poly(3-alkyltellurophene)s Are Solution-Processable Polyheterocycles

Journal of the American Chemical Society, 2013
The synthesis and characterization of a series of poly(3-alkyltellurophene)s are described. Polymers are prepared by both electrochemical and Kumada catalyst transfer polymerization methods. These polymers have reasonably high molecular weights (M(n) = 5.4-11.3 kDa) and can be processed in a manner analogous to that of their lighter atom analogues. All
Ashlee A, Jahnke, Brandon, Djukic, Theresa M, McCormick, Ester, Buchaca Domingo, Christoph, Hellmann, Yunjeong, Lee, Dwight S, Seferos   +6 more
openaire   +2 more sources

Ru(II)-Catalyzed [4 + 2]-Annulation of 2-Alkenyl/Arylimidazoles with N-Substituted Maleimides and 1,4-Naphthoquinones: Access to Imidazo-Fused Polyheterocycles.

Journal of Organic Chemistry
Synthesis of imidazo-fused polyheterocyclic molecular frameworks, viz. imidazo[1,2-a]pyrrolo[3,4-e]pyridines, imidazo[2,1-a]pyrrolo[3,4-c]isoquinolines, and benzo[g]imidazo[1,2-a]quinoline-6,11-diones, has been achieved by the ruthenium(II)-catalyzed [4 +
Neha Meena, Dhananjay S. Nipate, Prakash N. Swami, Krishnan Rangan, Anil Kumar   +4 more
semanticscholar   +1 more source