Stoichiometric aerobic aminohydroxylation of ethylene mediated by dpms–platinum complexes (dmps=di(2-pyridyl)methanesulfonate)
摘要:
Chloro di(2-pyridyl) methanesulfonate ethylene platinum(II) complex was converted to corresponding N-alkylplatina(II)azetidines by reacting the former with primary amines, MeNH(2) and tert-BuNH(2), to produce 2-ammonioethyl chloro platinum(II) species and their subsequent cyclization in the presence of NaOH in methanol. The N-alkylplatina(II) azetidines are oxidized under air or the atmosphere of pure O(2) to the corresponding N-alkylplatina(IV) azetidines in water or in methanol solution in the presence of one equivalent of a strong acid under ambient pressure at 22 degrees C. The resultin N-alkylplatina(IV)azetidines undergo C-O reductive elimination in acidic aqueous solutions to produce 2-(N-alkylamino)ethanols. (C) 2010 Elsevier B. V. All rights reserved.