Dimeric alpha-aziridine aldehydes have been used as the aldehyde component in Ugi and Passerini reactions. The highly reactive mixed anhydride intermediate is subject to nucleophilic attack by the aziridine, leading to 'homo-Ugi' beta-acylaziridinyl-alpha-amino-amides. The products can be readily transformed into substituted lactones.
Dimeric alpha-aziridine aldehydes have been used as the aldehyde component in Ugi and Passerini reactions. The highly reactive mixed anhydride intermediate is subject to nucleophilic attack by the aziridine, leading to 'homo-Ugi' beta-acylaziridinyl-alpha-amino-amides. The products can be readily transformed into substituted lactones.
Reaction of Vinyl Aziridines with Arynes: Synthesis of Benzazepines and Branched Allyl Fluorides
作者:Sherif J. Kaldas、Eva Kran、Christian Mück‐Lichtenfeld、Andrei K. Yudin、Armido Studer
DOI:10.1002/chem.201904727
日期:2020.2.3
on the reaction conditions and the choice of the aryne precursor, the aziridinium intermediate can be trapped through two distinct mechanistic pathways. The first one proceeds through a formal [5+2] cycloaddition to furnish valuable multi-substituted benzazepines. In the second pathway, the aziridinium is intercepted by a fluoride ion to afford allylic fluorides in good yields. Both reactions proceed