Results 41 to 50 of about 38,014 (298)

Utility of Sulphones in Heterocyclic Synthesis: Synthesis of Some Pyridine, Chromene and Thiophene Derivatives

Molecules, 2000
Phenylsulfonylacetonitrile (1) when reacted with α,β-unsaturated nitriles (2a,b) and/or 2-hydroxynaphthaldehyde yields pyridine derivatives (3a,b) and / or the iminochromene derivative (4) respectively.
M. E. A. Zaki, Hala M. Refat, A. A. Fadda   +2 more
doaj   +1 more source

Cyclohepta[b]thiophene derivatives. Part-IV. Dehydrogenation of cyclohepta[b]thiophene and cyclohepta[c]thiophene derivatives

, 1999
Department of Chemistry, Presidency College, Calcutta-700 073, India Manuscript received 23 March 1998, revised 26 October 1998, accepted 16 December 1998 Cyclohepta[b]thiophenes 3 and cyclohepta[c]thiophene 4 on dehydrogenation with selenium give a complex mixture of dehydrogenated products.
Sikha Lahiri, P. K. Sen
openaire   +1 more source

Palladium-catalyzed difluoromethylation of heteroaryl chlorides, bromides and iodides. [PDF]

, 2017
A palladium-catalyzed difluoromethylation of a series of heteroaryl chlorides, bromides and iodides under mild conditions is described. A wide range of heteroaryl halides such as pyridyl, pyrimidyl, pyrazyl, funanyl, thienyl, pyazolyl, imidazolyl ...
Gu, Yang, Gu, Yucheng, Lu, Changhui, Shen, Qilong, Wu, Jiang   +4 more
core   +1 more source

Halogen dance reactions on thiophene derivatives

Discover Molecules
Derivatives of thiophene play a significant role in the development of photoelectronic materials. Among the various modification methods for thiophene, the halogen dance reaction (HDR) represents an efficient strategy, as it addresses the challenge of ...
Ronghong Zhou, Sheng Zhang, Hua Wang
doaj   +1 more source

Synthesis and characterization of novel low band gap semiconducting polymers for organic photovoltaic and organic field effect transistor applications [PDF]

, 2012
PhDThis thesis describes the synthesis, characterization and device properties of a range of conjugated polymers incorporating 3,6-dilakylthieno[3,2-b]thiophene.
Aleroh, Dickson
core  

Ring closing reaction in diarylethene captured by femtosecond electron crystallography [PDF]

, 2013
The photoinduced ring-closing reaction in diarylethene, which serves as a model system for understanding reactive crossings through conical intersections, was directly observed with atomic resolution using femtosecond electron diffraction.
Asano Y., Bertarelli C., Boggio-Pasqua M., Carole A. Morrison, Cheng Lu, Chergui M., Clark S. J., Collet E., Coppens P., Dudek R. C., Dwyer J. R., Eichberger M., Erasmus N., Ern J., Ern J., Ern J., Ernstorfer R., Fritz D. M., Gao M., Gao M., Grimme S., Hallmann J., Han T.-R. T., Hania P. R., Hania P. R., Harb M., Harb M., Hubert Jean-Ruel, Ihee H., Irie M., Irie M., Jean-Ruel H., Kobatake S., Kochman M. A., Lai Chung Liu, Meng Gao, Michal A. Kochman, Miyasaka H., Miyasaka H., Miyasaka H., Morimoto M., Okabe C., Owrutsky J. C., Perdew J. P., Poulin P. R., R. J. Dwayne Miller, Ryan R. Cooney, Schotte F., Sciaini G., Sciaini G., Shim S., Siwick B. J., Srinivasan R., Tamai N., Tani K., Techert S., Tian H., Uchida K., Vorontsov I. I.   +58 more
core   +1 more source

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Synthesis and Reactivity of 2-Acetylthiophenes Derivatives

Chemistry Proceedings, 2023
Thiophene is a five-membered sulfur containing a heteroaromatic ring. Its presence in compounds of therapeutic interest is remarkable, leading to various studies to develop strategies to synthesize new biologically active thiophene analogues.
Hadjer Missoum, Yazid Datoussaid, Noureddine Choukchou-braham, Julio A. Seijas, Maria Pilar Vázquez-Tato   +4 more
doaj   +1 more source

Electrochromic properties of a poly(dithienylfuran) derivative featuring a redox-active dithiin unit [PDF]

, 2012
A teraryl monomer containing a 1,4-dithiin-furan central unit has been synthesised and characterised by single crystal X-ray crystallography. The di(thienyl)furan monomer 11 was successfully polymerised electrochemically and shown to possess a lower ...
Berridge, Rory, Coles, Simon J., Elmasly, Saadeldin E. T., Findlay, Neil J., Kanibolotsky, Alexander L., Kaur, Sandeep, Skabara, Peter, Wilson, Claire   +7 more
core   +1 more source

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

Advanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero, Meghna Jha, Elsa Veronica Flores‐Vela, Joost Kimpel, Andreas Schaefer, Jiali Guo, Jesika Asatryan, Alberto Peinador Veiga, Shuichi Haraguchi, Per‐Anders Carlsson, Jaime Martín, Mariano Campoy‐Quiles, Christian Müller   +12 more
wiley   +1 more source