potential target in the treatment of pain and inflammatory and metabolic diseases. We have discovered a series of potent GPR35 agonists based on a coumarin scaffold and found that the introduction of a 1H-tetrazol-5-yl group significantly increased their potency. We designed and synthesized a newseries of N-[2-(1H-tetrazol-5-yl)phenyl]benzamide derivatives through a two-step synthetic approach, and characterized
Nickel-Catalyzed N-Arylation of Amides with (Hetero)aryl Electrophiles by Using a DBU/NaTFA Dual-Base System
作者:Mark Stradiotto、Travis Lundrigan、Joseph P. Tassone
DOI:10.1055/a-1337-6459
日期:2021.10
The first nickel-catalyzed N-arylation of amides with (hetero)aryl (pseudo)halides employing an organic amine base is described. When using Ni(COD)2/CyPAd-DalPhos catalyst mixtures in combination with DBU/NaTFA as a dual-base system, a diversity of (hetero)arylchloride, bromide, tosylate, and mesylate electrophiles were successfully cross-coupled with structurally varied primary amides, as well as
Novel domino synthesis of 2‐(2,3.4‐substituted phenyl) quinazolin‐4‐amine
作者:Walid Fathalla、Pavel Pazdera、Mohamed E. Khalifa、Ibrahim A. I. Ali、Samir M. El Rayes
DOI:10.1002/jhet.4435
日期:2022.5
Convenient domino protocol was developed for the synthesis of 2-arylquinazolin-4-amines by the reaction of N-(2-cyanophenyl) substituted benzimidoyl isothiocyanates with isopropyl amine. The major advantages of this protocol are short reaction times, mild conditions, simple work up, high yields, and pure products. The efficacy of this protocol owes to the competence of synthesis, pure isolation of
Convenient domino synthesis of quinazolin-4(3H)-ylidene carbothioamides and carbamothioates
作者:Walid Fathalla、Pavel Pazdera
DOI:10.1016/j.tet.2017.06.024
日期:2017.8
the synthesis of secondary amine N-(2-(substitutedphenyl)quinazolin-4(3H)-ylidene) carbothioamides and O-alkyl N-2-(substitutedphenyl)quinazolin-4(3H)-ylidene carbamothioates has been described. It involves the cascade reaction of various secondary amines or alcohols with imidoylisothiocyanates in acetonitrile to afford the desired compounds in excellent yields. The reaction time was 48 h under reflux