2444-68-0Relevant articles and documents
Synthesis and Reaction of Anthracene-Containing Polypropylene: A Promising Strategy for Facile, Efficient Functionalization of Isotactic Polypropylene
Zhang, Deguang,Pan, Li,Li, Yanguo,Wang, Bin,Li, Yuesheng
, p. 2276 - 2283 (2017)
A novel anthracene-containing isotactic polypropylene (An-iPP) with high molecular weight (>10 × 104) and satisfying incorporation (5.7 mol %) was synthesized via direct copolymerization of propylene and 9-hexenylanthracene. The pendent anthryl group of the resulting An-iPP is quite active, and this provides a facile and efficient avenue to synthesize various functional iPPs. As a typical and important example, maleic anhydride (MA) functionalized polypropylene, was successfully prepared in a highly efficient, catalyst-free, byproduct-free, and controllable way via mild Diels-Alder (D-A) reaction between pendent anthryl groups and MA. More importantly, the D-A functionalization process did not sacrifice the original properties of the An-iPP, as no unfavorable degradation and cross-linking were detected in DSC and GPC analyses. Besides MA, several other dienophiles could also be conveniently used as functional reagents to prepare various functionalized iPPs with distinct properties. The unique fluorescent property of An-iPP was studied and could be used for functionalization process monitoring.
Copper-Catalyzed Defluorinative Hydroarylation of Alkenes with Polyfluoroarenes
Fu, Bin,Li, Xiaohong,Xiong, Tao,Yuan, Xiuping,Zhang, Qian,Zhang, Qiao
supporting information, p. 23056 - 23060 (2020/10/19)
A catalytic defluorinative hydroarylation of alkenes with polyfluoroarenes in the presence of dppbz-ligated Cu catalyst and silanes was developed. This method provides a straightforward and alternative avenue to synthetic important polyfluorinated arenes with readily available and bench-stable alkenes as latent nucleophiles, and therefore avoids conventional reliance on stoichiometric quantities of organometallic reagents. This reaction proceeds under very mild conditions and exhibits good functional group compatibility and high level of regioselectivity. The synthetic potential of this method was further demonstrated by a gram-scale synthesis, and an array of experimental studies were also carried out to elaborate the probable mechanism.
Hantzsch Ester as a Photosensitizer for the Visible-Light-Induced Debromination of Vicinal Dibromo Compounds
Chen, Wenxin,Tao, Huachen,Huang, Wenhao,Wang, Guoqiang,Li, Shuhua,Cheng, Xu,Li, Guigen
supporting information, p. 9546 - 9550 (2016/07/14)
The debromination of vicinal dibromo compounds to generate alkenes usually requires harsh reaction conditions and the addition of catalysts. Just recently the visible-light-induced debromination of vicinal dibromo compounds emerged as a possible alternative to commonly used methods, but the substrate scope of this reaction is limited and a photocatalyst is necessary for the successful conversion of the starting compounds. A catalyst-free visible-light-induced debromination of vicinal dibromo compounds with a base-activated Hantzsch ester as photosensitizer is reported. The method has a wide substrate scope and a broad functional-group compatibility.
