A novel route to organonitrites by Pd-catalyzed cross-coupling of sodium nitrite and potassium organotrifluoroborates
摘要:
Microwave irradiated palladium-catalyzed cross-coupling reaction of potassium styryltrifluoroborates and sodium nitrite gives the corresponding styryl nitrites in high yields. Potassium aryltrifluoroborates also furnish aryl nitrites under same reaction condition. This unprecedented cross-coupling is an interesting development and has the potential to lead to new nitration protocols. (C) 2012 Elsevier Ltd. All rights reserved.
Sunlight-driven trifluoromethylation of olefinic substrates by photoredox catalysis: A green organic process
作者:Munetaka Akita、Takashi Koike
DOI:10.1016/j.crci.2015.01.013
日期:2015.7
types of catalytic photoredox processes following the reductive quenching cycle (RQC) and the oxidative quenching cycle (OQC), the discussion is focused on organic transformations based on OQC, in particular the trifluoromethylation of olefinic substrates with electrophilic trifluoromethylating reagents furnishing solvolytic addition products and substitution products. It is concluded that catalytic
Photoinduced 1,2-dicarbofunctionalization of alkenes with organotrifluoroborate nucleophiles <i>via</i> radical/polar crossover
作者:María Jesús Cabrera-Afonso、Anasheh Sookezian、Shorouk O. Badir、Mirna El Khatib、Gary A. Molander
DOI:10.1039/d1sc02547c
日期:——
postulated to proceed throughphotochemicalradical/polar crossover to afford a key carbocation species that undergoes subsequent trapping with organoboron nucleophiles to accomplish the carboallylation, carboalkenylation, carboalkynylation, and carboarylation of alkenes with regio- and chemoselective control. The mechanistic intricacies of this difunctionalization were elucidated through Stern–Volmer quenching
Diversification of 6‐bromo‐2‐substituted Pyridine Derivatives
<i>via</i>
Suzuki‐Miyaura Cross‐Coupling
作者:Abigail E. Lambert、Jesse D. Carrick
DOI:10.1002/jhet.3144
日期:2018.5
improvement of molecular performance in the aforementioned areas. The current work describes an efficient catalyst/ligand combination for accessing 2‐acetyl‐ and 2‐procarbonyl substituted pyridines viaSuzuki‐Miyaura cross‐coupling with various organotrifluoroborates. Twenty examples are described with carbonyl and procarbonyl functional groups which afford subsequent access to diversified unsymmetric
Lewis acid promoted Mannich type reactions of α,α-dichloro aldimines with potassium organotrifluoroborates
作者:Sara Stas、Kourosch Abbaspour Tehrani
DOI:10.1016/j.tet.2007.06.003
日期:2007.9
Potassium phenylethynyltrifluoroborate and potassium styryltrifluoroborates react with α,α-dichlorinated aldimines in the presence of BF3·OEt2 as a Lewis acid to give a new stable class of functionalized propargylamines and allylamines. The use of hexafluoroisopropanol as a co-solvent in this modified Petasis reaction allows high yield isolation of the target compounds.