Results 81 to 90 of about 4,839 (215)

Nickel‐Catalyzed Three‐Component Coupling Reactions of Iodobenzenes, an Isocyanide, and a Disilathiane: Access to Cyclic Thioimidates and Secondary Thioamides

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 19, 22 May 2026.
The one‐pot synthesis of 3‐benzylidenbenzo[c]thiophen‐1‐amines was achieved through the nickel‐catalyzed three‐component coupling reaction of 1‐ethynyl‐2‐iodobenzenes, tert‐butyl isocyanide, and hexamethyldisilathiane. This procedure is applicable to the preparation of secondary thioamides using aryl iodides.
Norio Sakai   +4 more
wiley   +1 more source

Evaluation of In Vitro Anti-inflammatory Activity of Azomethines of Aryl Oxazoles

open access: yesE-Journal of Chemistry, 2011
Ability to inhibit erythrocyte hemolysis is often used as a characteristic of the membrane stabilising action of chemical compounds. Azomethines of aryl oxazoles were evaluated for anti-inflammatory by in vitro hemolytic membrane stabilising study.
V. Niraimathi, A. Jerad Suresh, T. Latha
doaj   +1 more source

New heterocycles having double characters; as antimicrobial and surface active agents.

open access: yesGrasas y Aceites, 2004
Fatty acids isothiocyanate (1) was used as a starting material to synthesize some important heterocycles such as triazoles, oxazoles, thiazoles, benzoxazoles and quinazolines by treating with different types of nucleophiles such as nitrogen nucleophiles,
M. S. Amine   +4 more
doaj   +1 more source

Recent Approaches for the Synthesis of Pyridine and Quinoline Cores Present in Natural Products

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 10, 19 May 2026.
An anthology of the most recent methods used to synthesize pyridines and quinolines found in natural products over the last decade. Pyridines, quinolines, and their derivatives represent a class of significant heterocyclic compounds that are prevalent in a multitude of natural products, including alkaloids found in plants, fungi, insects, marine ...
Carl Bowman   +2 more
wiley   +1 more source

Triflic anhydride-mediated synthesis of oxazoles

open access: yes, 2009
N-Acyl amino acid esters undergo triflic anhydride-mediated cyclodehydration to form oxazoles and bisoxazoles in a simple one-pot transformation. © 2008 Elsevier Ltd.
Mecinovic, J   +3 more
core   +1 more source

Stereoselective Direct Copper-Catalyzed Alkenylation of Oxazoles with Bromoalkenes

open access: yes, 2016
A copper-catalyzed direct alkenylation of oxazoles with bromoalkenes has been developed. The method is both regio- and stereoselective and tolerates a variety of functional groups.
Sandrine Piguel (2145475)   +3 more
core   +1 more source

General Methodology for the Preparation of 2,5-Disubstituted-1,3-oxazoles

open access: yes, 2016
Deprotonation of 2-(phenylsulfonyl)-1,3-oxazole (1) readily provides a useful C-5 carbanion that is reactive with a variety of electrophiles. Aldehydes and ketones are useful substrates, and the formation of 5-iodo- and 5-tri-n-butylstannyl oxazoles ...
Liangfeng Fu (1863826)   +1 more
core   +1 more source

Palladium-Catalyzed C–H Arylation of (Benzo)oxazoles or (Benzo)thiazoles with Aryltrimethylammonium Triflates

open access: yes, 2015
The C–H arylation of (benzo)­oxazoles or (benzo)­thiazoles with aryltrimethylammonium triflates was carried out via Pd-catalyzed C–H/C–N cleavage.
Jian-Long Tao (1456900)   +2 more
core   +1 more source

Active γ-manganese dioxide promoted conversion of 4,5-dihydro-1,2-oxazoles to 1,2-oxazoles.

open access: yes, 1977
Dehydrogenation of seven dihydrooxazoles I (R1 = Ph, octyl, Me, Ph, 2-​naphthyl, CO2Me, hexyl; R2 = H, NO2; R3 = Me, Ph, (CH2)​2CO2Me) with γ-​MnO2 gave 97-​100​% oxazoles ...
BENETTI, Simonetta   +3 more
core   +1 more source

Gallium-containing polymer brush film as efficient supported Lewis acid catalyst in a glass microreactor

open access: yesBeilstein Journal of Organic Chemistry, 2013
Polystyrene sulfonate polymer brushes, grown on the interior of the microchannels in a microreactor, have been used for the anchoring of gallium as a Lewis acid catalyst.
Rajesh Munirathinam   +7 more
doaj   +1 more source

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