Direct visible-light-mediated aminofluorination of styrenes has been developed with high regioselectivity. Shelf-stable N-Ts-protected 1-aminopyridine salt was used as the nitrogen-radical precursor, and the commercially available hydrogen fluoride-pyridine was used as the nucleophilic fluoride source. The synthesis of an analogue of LY503430 was performed to demonstrate the synthetic value of this
Regio- and Enantioselective Aminofluorination of Alkenes
作者:Wangqing Kong、Pascal Feige、Teresa de Haro、Cristina Nevado
DOI:10.1002/anie.201208471
日期:2013.2.25
Enantio‐ and regioselective: The intramolecular enantioselective aminofluorination of unactivated olefins was achieved by using a chiral iodo(III) difluoride salt. A highly regioselective aminofluorination of styrenes to access 2‐fluoro‐2‐phenylethanamines was also developed.
Achieving regio- and stereo-control in the fluorination of aziridines under acidic conditions
作者:Otome E. Okoromoba、Zhou Li、Nicole Robertson、Mark S. Mashuta、Uenifer R. Couto、Cláudio F. Tormena、Bo Xu、Gerald B. Hammond
DOI:10.1039/c6cc07855a
日期:——
We developed an efficient fluorination protocol that converts easily accessible aziridines into [small beta]-fluoroamines, which are important motifs in biologically active molecules. In contrast with traditional fluorination approaches, DMPU-HF has shown...
Facile Preparation of β-Fluoro Amines by the Reaction of Aziridines with Potassium Fluoride Dihydrate in the Presence of Bu<sub>4</sub>NHSO<sub>4</sub>
作者:Ren-Hua Fan、Yong-Gui Zhou、Wan-Xuan Zhang、Xue-Long Hou、Li-Xin Dai
DOI:10.1021/jo034895k
日期:2004.1.1
Potassiumfluoride combined with tetrabutylammonium bisulfate is an efficient reagent to convert a variety of aziridines derived from cyclic and acyclic alkenes to β-fluoro amine derivatives in high yield.
Synthesis of β-Fluoro Amides Using Partially Hydrated Nickel Difluoride as Fluorine Source
作者:Wan Zhang、Li Su、Wei Hu、Jie Zhou
DOI:10.1055/s-0032-1317157
日期:——
beta-Fluoro amides were obtained from the reactions of activated aziridines with partially hydrated nickel difluoride (NiF2 center dot nH(2)O, n < 4) in good yields (47-82%) in the presence of tetra-n-butylammonium fluoride (20 mol%), while the non-activated aziridines did not react under the same conditions.