Oxidation of sterically-crowded selones using chloramine-T: generation and skeletal rearrangement of selone Se-imides
摘要:
Treatment of sterically-crowded bornane-2-selones possessing substituted bornane skeletons with chloramine-T afforded several products originated from intermediary selone Se-imides, and the direct observation of the intermediates was performed by NMR monitoring at low temperature. (C) 2000 Elsevier Science Ltd. All rights reserved.
Treatment of sterically crowded thione S-oxides derived from d-camphor with Lawesson’s reagent afforded dithiiranes along with deoxygenation of the starting materials, and the mixtures were subjected to mCPBA oxidation to give the corresponding dithiirane S-oxides and thione S-oxides.
Treatment of sterically-crowded bornane-2-selones possessing substituted bornane skeletons with chloramine-T afforded several products originated from intermediary selone Se-imides, and the direct observation of the intermediates was performed by NMR monitoring at low temperature. (C) 2000 Elsevier Science Ltd. All rights reserved.