The toxicity of organic sulphides to the eggs and larvae of the glasshouse red spider mite. IV.—Benzyl phenyl sulphides (substituted by halogens and other groups)
作者:R. F. Brookes、N. G. Clark、J. E. Cranham、D. Greenwood、J. R. Marshall、H. A. Stevenson
DOI:10.1002/jsfa.2740090209
日期:1958.2
A series of benzylphenylsulphides substituted by halogens and other groups, together with some of the corresponding sulphoxides and sulphones, are characterized, and their toxicities to the eggs and young mites of the glasshouseredspider (Tetranychus telarius, L.) are tabulated and discussed, especially as regards the effect of substituent groups on toxicity.
Magnetically recyclable CoFe<sub>2</sub>O<sub>4</sub> nanoparticles as stable and efficient catalysts for the synthesis of aryl thioethers <i>via</i> C–S coupling reactions
作者:Saddam Iraqui、Md. Harunar Rashid
DOI:10.1039/d2nj04847g
日期:——
temperature, TB, the material shows superparamagnetic behaviour. This behaviour makes the catalyst magneticallyseparable and reusable up to 7th cycle without much loss of their catalytic activity. The protocol can be expanded to a wide array of substituted arylhalides and substituted benzyl halides with moderate to excellent yields.
芳基硫醚及其衍生物构成一类重要的有机化合物,在天然产物、药物和生物活性分子的合成中起着重要作用。因此,C-S键的形成是有机合成中一个非常重要的过程。交叉偶联反应是最流行和最强大的 C-S 键形成工具之一。本研究提出了一种无味且无配体的方案,用于在硫脲作为硫源的情况下,通过CoFe 2 O 4 NP 催化苄基卤化物和芳基卤化物之间的偶联反应来合成芳基硫醚。CoFe 2 O 4在没有任何添加的稳定剂的情况下,NPs 是在 180 °C 下通过水热法合成的。合成的 CoFe 2 O 4 NPs 是球形的,尺寸从 7 到 15 nm 不等,并具有立方结构。它们在室温下表现出铁磁行为,而高于阻挡温度T B时,材料表现出超顺磁行为。这种行为使催化剂可磁分离并可重复使用至第 7 个循环,而不会损失太多催化活性。该协议可以扩展到范围广泛的取代芳基卤化物和取代的苄基卤化物,具有中等到极好的收率。
Yue, Guoren; She, Xuegong; Zhang, Zheng, Journal of Chemical Research - Part S, 2003, # 9, p. 559 - 561