Synthesis and crystal structure of bis[(4S,5S)-4,5-dihydro-4,5-diphenyl-2-(2′-oxidophenyl-χO)oxazole-χN]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 H-1-NMR, IR, MS spectrometry. The molecular structure 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 were found to be moderately effective in the catalytic asymmetric Baeyer-Villiger reaction of 2-phenylcyclohexanone. (C) 2001 Elsevier Science B.V. All rights reserved.