Synthesis of β-Fluoroamines by Lewis Base Catalyzed Hydrofluorination of Aziridines
摘要:
Lewis base catalysis promotes the in situ generation of amine-HF reagents from benzoyl fluoride and a non-nucleophilic alcohol. The hydrofluorination of aziridines to provide beta-fluoroamines using this latent HF source is described. This protocol displays a broad scope with respect to aziridine substitution and N-protecting groups. Examples of regio- and diastereoselective ring opening to access medicinally relevant beta-fluoroamine building blocks are presented.
One-pot synthesis of aziridines from vinyl selenones and variously functionalized primary amines
作者:Silvia Sternativo、Francesca Marini、Francesca Del Verme、Antonella Calandriello、Lorenzo Testaferri、Marcello Tiecco
DOI:10.1016/j.tet.2010.06.055
日期:2010.8
Variously substituted aziridines were conveniently prepared by an aza-Michael Initiated Ring Closure (aza-MIRC) reaction starting from vinyl selenones and primary amines, aminoalcohols or diamines. The reactions proceed in very high yields at room temperature in toluene or water. A significant rate acceleration was observed under aqueous conditions.
Efficient Ring Opening of Aziridines with Carboxylic Acids
作者:Manoj Kumar、Shikha Gandhi、Swinderjeet Singh Kalra、Vinod K. Singh
DOI:10.1080/00397910801928723
日期:2008.4.1
Abstract An efficient ring cleavage of aziridines with acids has been studied in the absence of any catalyst. The hydrolysis of the products, amino esters, leads to the corresponding amino alcohols. The reaction has been extended to chiral cycloalkyl aziridines, leading to the formation of diastereomers. After separation, these diastereomers have been converted to optically pure amino alcohols in two
Palladium‐Catalyzed Fluorinative Bifunctionalization of Aziridines and Azetidines with <i>gem</i>‐Difluorocyclopropanes
作者:Dongdong Li、Chaoren Shen、Zhiyao Si、Lu Liu
DOI:10.1002/anie.202310283
日期:2023.10.16
An unprecedented fluorinative bifunctionalization of aziridines and azetidines with gem-difluorocyclopropanes is disclosed via Pd catalysis for the first time, which reveals a novel ring-opening mode of cyclic amines.