Visible-Light-Induced Trifluoromethylation of Unactivated Alkenes with Tri(9-anthryl)borane as an Organophotocatalyst
作者:Jisu Moon、Yu Kyung Moon、Do Dam Park、Sukyung Choi、Youngmin You、Eun Jin Cho
DOI:10.1021/acs.joc.9b01624
日期:2019.10.18
applied as an organophotocatalyst for the visible-light-induced trifluoromethylation of unactivated alkenes with CF3I. The mild reaction conditions tolerated a variety of functional groups, and the reaction could be extended to perfluoroalkylations with C3F7I and C4F9I. Mechanistic studies revealed that the photoredox catalysis involves an oxidative quenching pathway.
申请人:Industry-University Cooperation Foundation Hanyang University ERICA Campus 한양대학교 에리카산학협력단(120120008551) Corp. No ▼ 131471-0017977BRN ▼134-82-10205
公开号:KR101504277B1
公开(公告)日:2015-04-02
본 발명은 유기 화합물에 트라이플루오로메틸 그룹을 도입하는 방법에 관한 것이다. 보다 상세하게는, 탄소-탄소 이중결합을 1이상 포함하는 유기 화합물을 광촉매, DBU(1,8-diazabicyclo-[5,4,0]-un-dec-7-ene) 및 CF3I와 혼합하는 단계 및 가시광선을 조사하는 단계를 포함하여, 반응을 단순화 하면서도 높은 수율과 우수한 이성질체 선택성을 구현할 수 있는 유기 화합물에 트라이플루오로메틸 그룹을 도입하는 방법에 관한 것이다.
Trifluoromethylation of Alkenes by Visible Light Photoredox Catalysis
作者:Naeem Iqbal、Sungkyu Choi、Eunjin Kim、Eun Jin Cho
DOI:10.1021/jo3022346
日期:2012.12.21
A method for trifluoromethylation of alkenes has been developed employing visible light photoredox catalysis with CF3I, Ru(Phen)(3)Cl-2, and DBU. This process works especially well for terminal alkenes to give alkenyl-CF3 products with only E-stereochemistry. The mild reaction conditions enable the trifluoromethylation of a range of alkenes that bear various functional groups.
Hydroxylamine‐Mediated C(sp2)−H Trifluoromethylation of Terminal Alkenes
Introduction of the trifluoromethyl (CF3) group into organic compounds has garnered substantial interest because of its significant role in pharmaceuticals and agrochemicals. Here, we report a hydroxylamine‐mediated radical process for C(sp2)−H trifluoromethylation of terminal alkenes. The reaction shows good reactivity, impressive E/Z selectivity (up to >20 : 1), and broad functional group compatibility. Expansion of this approach to perfluoroalkylation and late‐stage trifluoromethylation of bioactive molecules demonstrates its promising application potential. Mechanistic studies suggest that the reaction follows a radical addition and subsequent elimination pathway.