An aerobic visible-light driven photoredox catalytic formation of 2-substitutedbenzothiazoles through radical cyclization of thioanilides has been accomplished. The reaction features C–H functionalization and C–S bond formation with no direct metal involvement except the sensitizer. The reaction highlights the following: (1) visible-light is the reaction driving force; (2) molecular oxygen is the
Palladium-Catalyzed C-H Cyclization in Water: A Milder Route to 2-Arylbenzothiazoles
作者:Kiyofumi Inamoto、Yoshinori Kondo、Kanako Nozawa
DOI:10.1055/s-0031-1291164
日期:2012.7
medium in palladium-catalyzed C–H cyclization of thiobenzanilides. Reactions efficiently proceeded under considerably mild conditions such as 40 °C in water, providing a more practical, greener method for the synthesis of 2-arylbenzothiazoles. For somesubstrates, the addition of an amphiphilic surfactant greatly enhanced the process. The method represents a rare example of palladium-catalyzed C–H functionalization
在钯催化的硫代苯甲酰苯胺的 C-H 环化中,水被成功用作反应介质。反应在相当温和的条件下有效进行,例如在 40 °C 的水中,为合成 2-芳基苯并噻唑提供了一种更实用、更环保的方法。对于某些基材,添加两亲性表面活性剂大大增强了该过程。该方法代表了在水中进行钯催化的 C-H 功能化过程的一个罕见例子。
Vernin,G. et al., Comptes Rendus des Seances de l'Academie des Sciences, Serie C: Sciences Chimiques, 1969, vol. 268, p. 977 - 979
作者:Vernin,G. et al.
DOI:——
日期:——
The Role of Base in Reaction Performance of Photochemical Synthesis of Thiazoles: An Integrated Theoretical and Experimental Study
作者:Jiaxin Xu、Xiaoyu Ye、Zongchao Lv、Yi‐Hung Chen、Xiang Simon Wang
DOI:10.1002/chem.202304279
日期:——
testing. Feature analysis is conducted through the model interpretation process, enabling further exploration into the reaction mechanisms. We then chose two substrates of distinct structures and verified the predictions through experimental benchwork. This represents a novel reaction with different bases.