A Novel Synthesis of 2-Alkylthiobenzothiazoles and 2-Alkylthiobenzoxazoles
摘要:
3H-Benzothiazole-2-thione and 3H-benzoxazole-2-thione were selectively S-alkylated by use of O-alkylisoureas as the alkylating reagents. The reactions could be performed under mild reaction conditions in short reaction times, and high yields were obtained using O-primary-alkylisoureas, whereas low yields were obtained with sec- and tert-alkylisoureas.
Zinc Oxide Catalyzed Solvent-Free Mechanochemical Route for C-S Bond Construction: A Sustainable Process
作者:P. Md. Khaja Mohinuddin、N. C. Gangi Reddy
DOI:10.1002/ejoc.201601425
日期:2017.2.24
Zinc oxide-catalyzed solvent-freemechanochemical route has been developed for the rapid construction of C-S bond using a variety of thiols and phenacyl/benzyl/alkyl bromides via a nucleophilic substitution (SN2 mechanism). Notable advantages of this method include broad substrate scope, cleaner reaction profile, safe, scalable, high yields at ambient conditions and reuse of catalyst. Further, the
A direct C2–H thiolation of azoles with Bunte salts was achieved under the combined action of copper and silver salts, furnishing various substituted 2-thioazoles in moderate to good yields.
The toxicity of organic sulphides to the eggs and larvae of the glasshouse red spider mite. vii.—Benzyl phenyl sulphides (α-substituted)
作者:J. E. Cranham、D. Greenwood、H. A. Stevenson
DOI:10.1002/jsfa.2740090305
日期:1958.3
The synthesis of a number of benzylphenylsulphides, substituted in the α-position of the benzyl moiety, is described and their toxicities to the eggs and young mites of the glasshouseredspider (Tetranychus telarius L.) are tabulated.
Green Synthesis of Potential Antifungal Agents: 2-Benzyl Substituted Thiobenzoazoles
作者:María Sol Ballari、Natividad Herrera Cano、Abel Gerardo Lopez、Daniel Alberto Wunderlin、Gabriela Egly Feresín、Ana Noemí Santiago
DOI:10.1021/acs.jafc.7b04130
日期:2017.11.29
and Aspergillus spp.: 2-((4-(trifluoromethyl)benzyl)thio)benzo[d]thiazole, 3ac, and 2-((4-methylbenzyl)thio)benzo[d]thiazole, 3al. Thus, 3ac and 3al can be considered as broad spectrum antifungal agents. Furthermore, two new compounds, 2-((4-iodobenzyl)thio)benzo[d]thiazole, 3aj, and 2-(benzylthio)benzo[d]oxazole, 3ba, showed better inhibitory effect against Botrytis cinerea and Fusarium oxysporum
通过环保方法合成了一系列苄基取代的硫代苯并唑,以寻找新的抗真菌农药。使用KOH,苄基卤化物和水从2-巯基苯并恶唑开始制备化合物,这是一种简单而生态的方法。测试了针对一组植物致病真菌的新型抗真菌药。两种化合物对灰霉病菌,尖孢镰刀菌和曲霉属菌显示出有趣的活性:2-((4-(三氟甲基)苄基)硫代)苯并[ d ]噻唑,3ac和2-((4-甲基苄基)硫代)苯并[ d ]噻唑,3al。因此,3ac和3al可以被认为是广谱抗真菌药。此外,与之相比,两种新化合物2-((4-碘苄基)硫代)苯并[ d ]噻唑和3ba 2-(苄硫基)苯并[ d ]恶唑和3ba具有更好的抑制灰葡萄孢和尖孢镰刀菌的作用。商用杀菌剂Captan。因此,可以将3aj和3ba视为减谱抗真菌剂。
Heterocyclic benzazole derivatives with antimycobacterial In vitro activity
The series of 2-benzylsulfanyl derivatives of benzoxazole and benzothiazole were synthesized, evaluated for their in vitro antimycobacterial activity against Mycobacterium tuberculosis and non-tuberculous mycobacteria, and the activity expressed as the minimum inhibitory concentration (MIC) in micromol/L. The substances bearing two nitro groups (4e, 4f, 5e, 5f) or a thioamide group (4i, 4j, 5i, 5j)