Synthesis and crystal structure of bis-[(4S,5S)-4,5-dihydro-4,5-diphenyl-2-(2'-oxidophenyl-#chi#O)oxazole-#CHI#N] copper(II) and its application in the asymmetric Baeyer-Villiger reaction

摘要

Two new oxazolines (3 and 4) and their copper complexes (5 and 6) were synthesized. The four compounds were characterized by elemental analysis and ~1H-NMR, IR, MS spectrometry. The molecular structue of compound 6 was determined by single-crystal X-ray diffraction analysis. The four coordinate atoms [N(1), N(2), O(2), O(4)] and the central metal atom (Cu) form a saddle configuration. Compounds 5 and 6 found to be moderately effective in the catalytic asymmetric Baeyer-Williger reaction of 2-phenylcyclohexanone.