Fluoroalkyl derivative and process for preparing the same
摘要:
以下是一种新型化合物的通用式(I)或(II)的氟烷基衍生物:##STR1## 或 R.sub.1 --CH.dbd.CR.sub.2 (CF.sub.2).sub.n F (II) (其中,R.sub.1代表##STR2##(其中X代表氢原子、氯原子、溴原子、氟原子、碘原子、甲基基团、乙基基团、甲氧基、乙氧基或硝基),芳基氧基基团或具有1-20个碳原子的烷基或烷氧羰基基团,R.sub.2代表氢原子或甲基基团;n代表1-20的整数)。制备该衍生物的过程包括在金属催化剂的存在下,将烯烃化合物和氟烷烷磺酰氯反应,或者在上述过程之后进行额外的碱处理步骤。
A mild and simple three-component procedure for the direct vicinal halotrifluoromethylation of styrenes and aliphatic alkenes has been developed in the presence of [Ru(bpy)(3)](PF6)(2) as a photosensitizer and Umemoto's reagent as the CF3 source. The multicomponent method offers the advantage of short reaction time, moderate to good yields, and mild reaction conditions.
Kamigata, Nobumasa; Fukushima, Takamasa; Terakawa, Yoshie, Journal of the Chemical Society. Perkin transactions I, 1991, # 3, p. 627 - 633
Cu Photoredox Catalysts Supported by a 4,6-Disubstituted 2,2′-Bipyridine Ligand: Application in Chlorotrifluoromethylation of Alkenes
作者:Murat Alkan-Zambada、Xile Hu
DOI:10.1021/acs.organomet.8b00585
日期:2018.11.12
exhibit longer excited state lifetimes and higher Cu(I)/Cu(II) potentials compared to the most widely used Cucatalyst, [Cu(dap)2]Cl. The complex with Xantphos as the P^P ligand is an efficientcatalyst for chlorotrifluoromethylation of terminal alkenes, especially styrenes, which had been challenging substrates for previously reported photoredoxreactions. This chlorotrifluoromethylation method enables