Results 151 to 160 of about 916 (181)

Use of the quartz microbalance in the study of polyheterocycle electrosynthesis

Synthetic Metals, 1989
Abstract An electrochemical quartz crystal microbalance has been used to study the anodic electropolymerization and concurrent deposition of polypyrrole onto gold in acetonitrile and propylene carbonate using tetraethylammonium tosylate, tetrabutylammonium fluoroborate, and lithium perchlorate.
Charles K. Baker, John R. Reynolds
openaire   +1 more source

Synthesis of bioactive polyheterocyclic ring systems as 5α-reductase inhibitors

European Journal of Medicinal Chemistry, 2010
Simple synthetic strategies for the hitherto unreported [1,2,4]triazolo[4,3-a]pyrido[4,3-d]pyrimidines 8 and [1,2,4]triazolo[4',3':1,2]pyrimido[4,5-b][1,6]naphthyridine-5-one 15 are described based on reaction of thione 3 and 12 with hydrazonoyl chloride 1a-h, respectively.
Naglaa A, Abdel Hafez, Thoraya A, Farghaly, Mohamed A, Al-Omar, Mohamed M, Abdalla   +3 more
openaire   +2 more sources

Substrate-controlled switchable asymmetric annulations to access polyheterocyclic skeletons

Chemical Communications, 2016
Substrate-controlled switchable asymmetric annulations of Morita–Baylis–Hillman carbonates from isatins and α-cyano-α,β-unsaturated ketones catalysed by cinchona-derived tertiary amines, giving tetrahydrofuro[2′,3′:4,5]pyrano[2,3-b]indoles or spirooxindoles incorporating a cyclopentene motif, were disclosed.
Kai-Kai, Wang, Pan, Wang, Qin, Ouyang, Wei, Du, Ying-Chun, Chen   +4 more
openaire   +2 more sources

Controlled Redox and Electrical Properties in Polyheterocycles

2000
Abstract : Electrochromic and conducting polymers may prove especially important for a number of Air Force applications including chameleon coatings, informational displays, IR and microwave attenuation, dialed tint windows, and gap sealants. We are developing conjugated, redox active, and conducting polymers with controllable electronic band gaps that
openaire   +1 more source

Stitching Large Aromatic Polyheterocycles

Synfacts, 2023
openaire   +1 more source

A Carbohydrate‐based Synthetic Approach to Diverse Structurally and Stereochemically Complex Chiral Polyheterocycles

Chemistry - an Asian Journal, 2021
Samuzal Bhuyan, Amit Chakraborty, Biswajit G Roy   +2 more
exaly  

Polyheterocyclic conducting polymers and composites derivates

Synthetic Metals, 1989
J.C. Dubois, O. Sagnes, F. Henry
openaire   +1 more source

CuBr-promoted domino Biginelli reaction for the diastereoselective synthesis of bridged polyheterocycles: Mechanism studies and in vitro anti-tumor activities

Chinese Chemical Letters, 2022
Quan Li, Ming-Hua Zeng
exaly  

Five-Membered Fused Polyheterocycles

2020
openaire   +1 more source

Recent synthetic developments in a powerful imino Diels–Alder reaction (Povarov reaction): application to the synthesis of N-polyheterocycles and related alkaloids

Tetrahedron, 2009
Vladimir V Kouznetsov
exaly