Regioselective Ring Opening of N-H-Aziridines with Sulfur Nucleophiles in Liquid SO2
作者:Māris Turks、Jevgeņija Lugiņina
DOI:10.1055/s-0036-1588670
日期:——
N-H-Aziridines undergo efficient ring-opening reactions with aromatic and aliphaticthiols in liquid sulfur dioxide as reaction medium. Due to the Lewisacidic nature of SO2, these reactions do not require any other catalytic additives. The expected β-alkyl/arylthio-amines (β-amino thioethers) are obtained with excellent β-regioselectivity. The developed reaction conditions are compatible with chiral starting
Synthesis, X-ray, and cytotoxicity studies of (S)- and (R)-aziridine-2-carboxamide (Leakadine) are described. X-ray data for the enantiomericallypureform are compared with those for racemic aziridine-2-carboxamide in order to explain the 21°C large melting point difference between both series. It was found that despite their overall low cytotoxicity (S)-aziridine-2-carboxamide is slightly more cytotoxic