Synthesis and properties of N-substituted (1R,5S)-4-aminomethylidene-1,8,8-trimethyl-2-oxabicyclo[3.2.1]octan-2-ones
作者:Uroš Grošelj、David Bevk、Renata Jakše、Anton Meden、Samo Pirc、Simon Rečnik、Branko Stanovnik、Jurij Svete
DOI:10.1016/j.tetasy.2004.06.008
日期:2004.8
N-Substituted (1R,5S)-4-aminomethylidene-1,8,8-trimethyl-2-oxabicyclo[3.2.1]octan-3-ones were prepared in three steps from (1R)-(+)-camphor via coupling of (2R,4E, 5S)-3-[(dimethylamino)methylidene]- 1, 8,8-trimethyl-2-oxabicyclo[3.2.1] octan-3-one with primary amines. N,N'-Bis-[(1R,5S)-1,8,8-trimethyl-3-oxo-2-oxabicyclo[3.2.1]oct-4-ylidene]methyl} benzene-1,2-diamine was used as the ligand in the preparation of the corresponding coordination compounds with palladium(II), copper(II) and nickel(II). The structures were determined by 2D NMR techniques, NOESY spectroscopy and X-ray diffraction. (C) 2004 Elsevier Ltd. All rights reserved.