Results 71 to 80 of about 12,849,117 (223)

A new synthetic approach to pyrazolo[3,4-c]-1,2,5-oxadiazoles

, 2000
4-​Aryl-​substituted 6-​methyl-​4H-​pyrazolo[3,​4-​c]​-​1,​2,​5-​oxadiazoles were easily obtained through oxidn.
ROMAGNOLI, Romeo, BARALDI, Pier Giovanni, PINEDA DE LAS INFANTAS MJ, MANFREDINI, Stefano   +3 more
core   +1 more source

Synthesis of N, N΄3, 4-Dialkylamino-1, 2, 5-Oxadiazoles [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2003
N, N΄-3, 4-di(methylamino)-1, 2, 5-oxadiazole (1f) was prepared by dehydration of N, N΄-3, 4-di(methylamino)glyoxime (2f) in aqueous potassium hydroxid at 170-180 ˚C. Under similar conditions N, N΄-3, 4-di(benzylamino)-1, 2, 5-oxadiazole (1c) and N, N΄-3,
Ali Kakanejadifardi, Farshad Delfani, Bijan Ranjbar   +2 more
doaj  

A Facile Method for the Synthesis of 6-Aryl-1-(3-Chloropropanoyl)-4-[(E)-1-(2-Furyl)Methylidene)]-1,2,3,4-Tetrahydro-3-Pyridazinones and 2-(2-Chloroethyl)-5-[α-Aracyl-β-(2-Furyl)]-(E)-Vinyl-1,3,4-Oxadiazoles

Molecules, 2000
The 6-aryl-1-(3-chloropropanoyl)-4-[(E)-1-(2-furyl)methylidene)]-1,2,3,4-tetrahydro-3-pyridazinones (6a-d) were synthesized by the reaction of acid chloride 3 with α-aracyl(β-2-furyl)acrylic acid hydrazides (2a-d) in a high yield, one pot reaction.
Ahmed I. Hashem, Abdel-Sattar S. Hamad
doaj   +1 more source

A Review of Modern Methods of Synthesis 1, 3, 4-Oxadiazole as a Bioactive Compounds

Wasit Journal for Pure sciences, 2023
ABSTRACT: Oxadiazole ring is a heterocyclic molecule with an oxygen and two nitrogen atoms spread throughout its five-membered structure. There are four different isomers that have been discovered, Because of their wide applications in a range of sectors, including medications . Some of these biological activity are; anticonvulsant capacity, anticancer
openaire   +2 more sources

Regioselective Oxidative Oligomerization of 2‐Tert‐Butylpyrene Toward Structurally Defined Oligomers and Their Application in Organic Light‐Emitting Diodes

European Journal of Organic Chemistry, Volume 29, Issue 36, 24 September 2026.
Treatment of 2‐tert‐butylpyrene with Cu2+ afforded structurally well‐defined pyrene oligomers, up to the 13‐mer. Single‐crystal X‐ray diffraction, spectroscopic analyses, and computational studies were conducted to evaluate the properties of the resulting oligopyrenes.
Md Jadu Mia, Daiki Tauchi, Miku Mizoe, Teru Hashimoto, Masashi Hasegawa, Hiroaki Chihara, Hiroto Iwano, Shigeyuki Yagi, Marco Fusè, Giuseppe Mazzeo, Giovanna Longhi, Sergio Abbate, Qingyu Wang, Tamaki Nakano, Ken‐ichi Sugiura   +14 more
wiley   +1 more source

Studies on 2,5-Disubstituted-1 ,3,4-oxadiazoles. Part-1. Preparation andAntimicrobial Activity of 2-Aryl-5- (4'- benzenesulphonamidophenyl)/( 4'- pyridyl)-1 ,3,4-oxadiazoles

, 1989
Department of Chemistry, Saurashtra University, Rajkot-860 005 Manuscript received 13 June 1988, revised 2 January 1989, accepted 2 February 1989 Some new 2,5-disubstituted-1,3,4-oxadiazoles have been prepared having 2-aryl-5- (4 ...
V. L. PACHHAMIA, A. R. PARIKH
core   +1 more source

5-Furan-2yl[1,3,4]oxadiazole-2-thiol, 5-Furan-2yl-4H [1,2,4] triazole-3-thiol and Their Thiol-Thione Tautomerism

Molecules, 2005
5-Furan-2-yl[1,3,4]oxadiazole-2-thiol (Ia) and 5-furan-2-yl-4H-[1,2,4]-triazole-3-thiol (Ib) were synthesized from furan-2-carboxylic acid hydrazide. Mannich basesand methyl derivatives were then prepared.
A. Cansız, A. Çetin, M. Koparır   +2 more
doaj   +1 more source

Synthesis of 2, 5-disubstituted-1, 3, 4-oxadiazole derivatives

Journal of Drug Delivery and Therapeutics, 2019
Synthesis of a series of various 2, 5-disubstituted-1, 3, 4-oxadiazole derivatives (7a-7u) have been done. Synthesis of a series of intermediates (3a-3c and 5a-5c) have been also done, ethyl-2-phenoxyacetate (3a), ethyl 2-(2, 4-dichlorophenoxy)acetate (3b), ethyl 2-(4-nitrorophenoxy) acetate (3c), 2-phenoxyacetohydrazide (5a), 2-(2, 4-dichlorophenoxy ...
Raghvendra Singh Bhadauria, Neetesh Kumar Sharma, Sanwar Mal Solet   +2 more
openaire   +1 more source

Oxadiazolone‐Triazole Derivatives as a New Scaffold for Modulation of Angiotensin II‐Induced Vascular Contraction

ChemMedChem, Volume 21, Issue 17, 14 September 2026.
A novel series of candidate AT1 receptor antagonists based on oxadiazolone‐triazole scaffolds was designed and synthesized. Most compounds reduced angiotensin II‐induced vascular contraction in an initial biological screening, with compound 7f emerging as the most active derivative.
Larissa F. L. Ferreira, Daiana G. de A. Vasconcelos, Ruth C. A. Santos, Jivaldo G. Ferreira, Alice V. Araújo, Janaína V. dos Anjos   +5 more
wiley   +1 more source

Síntese de ligantes fotoluminescentes derivados do heterociclo 1,3,4-oxadiazol [PDF]

, 2005
TCC (graduação) - Universidade Federal de Santa Catarina. Centro de Ciências Físicas e Matemáticas. Curso de Química.A síntese, de novos compostos fotoluminescentes contendo o heterociclo 1,3,4-oxadiazol são descritas.
FRIZON, Tiago Elias Allievi
core