Photoinduced successive oxidative ring-opening and borylation of indolizines with NHC–boranes
作者:Huitao Zheng、Honggang Xiong、Chaobo Su、Hua Cao、Huagang Yao、Xiang Liu
DOI:10.1039/d1ra08072e
日期:——
A facile photoinduced successive oxidative ring-opening and borylation of indolizines with NHC–boranes via a one-pot method has been unveiled. This photo-promoted strategy enables the formation of unsaturated NHC–boryl carboxylates under transition metal-free and radical initiator-free conditions. A wide array of pyridine-containing NHC–boryl carboxylates were directly prepared in moderate to good
Photocatalytic C–H Disulfuration for the Preparation of Indolizine-3-disulfides
作者:Songxin Wu、Dangzhong Hu、Xuegui Wan、Jiaji Zhao、Qiuxing He、Zhengquan Su、Hua Cao
DOI:10.1021/acs.joc.2c01871
日期:2022.12.16
variety of indolizine-3-disulfides with good yields. Trisulfide dioxides were explored as a high-efficient disulfuration reagent. This disulfuration reaction could be scaled up to grams. Mechanistic studies support a photoinduced pathway involving the generation of indolizine cationic radicals. A bulky alkyl substituent on terminal sulfur of trisulfide dioxide A was necessary for selective formation of
开发了中氮氢化合物的光催化 C-H 二硫化,为多种中氮氢化合物 3-二硫化物提供了一种具有良好收率的方法。三硫化物二氧化物被探索为一种高效的二硫化试剂。这种二硫化反应可以放大到克级。机理研究支持涉及中吲嗪阳离子自由基生成的光诱导途径。二硫化物 A 的末端硫上的大烷基取代基对于选择性地形成二硫化物而不是一硫化物是必要的。
Deconstructive Cycloaromatization Strategy toward <i>N</i>,<i>O</i>-Bidentate Ligands from Indolizines and Cyclopropenones
作者:Jinlei Zhou、Xiaotian Shi、Huitao Zheng、Guangxian Chen、Chen Zhang、Xiang Liu、Hua Cao