Catalyst free synthesis of
<scp>
2‐Aryl‐2
<i>H</i>
</scp>
‐benzo[
<i>b</i>
][1,4]oxazines and
<scp>3‐Aryl‐2H</scp>
‐benzo[
<i>b</i>
][1,4]thiazin‐2‐ones: An ultrasonication‐assisted strategy
作者:Bisma Teli、Malik Abdul Waseem、Showkat Rashid、Bilal Ahmad Ganaie、Bilal A. Bhat
DOI:10.1002/jhet.4267
日期:2021.7
An ultrasonication-assisted synthesis of 2-Aryl-2H-benzo[b][1,4]oxazines and 3-aryl-2H-benzo[b][1,4]thiazin-2-ones has been established by reacting phenacyl bromides with 2-aminophenol and 2-aminothiophenol, respectively. This approach fosters flexibility in generating a diverse range of 1,4-benzoxazines and 1,4-benzothiazinones under catalyst-free reaction conditions. Further scope toward the synthesis
超声辅助合成 2-Aryl-2 H - benzo[ b ][1,4] oxazines 和 3-aryl-2 H - benzo[ b ][1,4]thiazin-2-ones苯甲酰溴分别与 2-氨基苯酚和 2-氨基苯硫酚。这种方法提高了在无催化剂反应条件下生成各种 1,4-苯并恶嗪和 1,4-苯并噻嗪酮的灵活性。还探索了合成罕见的双苯并恶嗪加合物的进一步范围,这使我们能够提出反应机制。
From Phenothiazine to 3-Phenyl-1,4-benzothiazine Derivatives as Inhibitors of the <i>Staphylococcus aureus</i> NorA Multidrug Efflux Pump
作者:Stefano Sabatini、Glenn W. Kaatz、Gian Maria Rossolini、David Brandini、Arnaldo Fravolini
DOI:10.1021/jm701623q
日期:2008.7.1
Overexpression of effluxpumps is an important mechanism by which bacteria evade effects of substrate antimicrobial agents and inhibition of such pumps is a promising strategy to circumvent this resistance mechanism. NorA is a Staphylococcusaureusmultidrugeffluxpump, the activity of which confers decreased susceptibility to many structurally unrelated agents, including fluoroquinolones, resulting
quinoxalinones) were efficiently synthesized in excellent yields via α-bromoketones with o-substituted aniline (2-aminothiophenol, aryl-1,2-diamines and 2-aminophenol). This protocol accomplishes sp3 C-H bond oxidation and functionalization in one-pot without any metal catalyst.