Nitrogen chirality via the sterical veto of N inversion
作者:Sergey V. Usachev、Grygorii A. Nikiforov、Yurii A. Strelenko、Ivan I. Chervin、Konstantin A. Lyssenko、Remir G. Kostyanovsky
DOI:10.1070/mc2003v013n03abeh001751
日期:2003.1
Novel cyclic hydrazines 4–8 with sterically hindered (4, 6, 7) or arrested (5, 8) nitrogeninversion were synthesised; pyrazolydine 5 was separated into enantiomers by chiral chromatography; the crystal structures of salts 5a and 5b were studied by X-ray diffraction analysis.