Organoplatinum (II) complexes containing bis-(N-heterocyclic carbene) ligands: Catalytic activity in hydrosilylation of α,β-unsaturated ketones | ||
| شیمى کاربردى روز | ||
| Article 19, Volume 13, Issue 46, March 2018, Pages 295-310 PDF (1.11 M) | ||
| Document Type: Original Article | ||
| DOI: 10.22075/chem.2017.10794.1049 | ||
| Authors | ||
| sirous jamali* ; Sedigheh Abedanzadeh | ||
| School of Chemistry, Sharif University of Technology, Tehran, Iran | ||
| Receive Date: 08 March 2017, Revise Date: 13 April 2017, Accept Date: 30 August 2017 | ||
| Abstract | ||
| Two N-heterocyclic carbene platinum complexes [PtMe2(NHC)], 1 and [Pt(TFA)2(NHC)], 2, in which, NHC = 1, 1′- methylene- 3, 3′- bis[(N-(tert-butyl) imidazol-2- ylidene] have been prepared and characterized using NMR spectroscopy and ESI-MASS spectrometry. Reactivity of these complexes toward hydrosilylation of some α,β-unsaturated ketones investigated by NMR spectroscopy. Dimethyl bis-NHC platinum(II) complex shows good performance in comparison with those observed for trifluoroacetate bis-NHC platinum(II) complex, 2 in which higher efficiency and selectivity obtained with dimethyl complex 1 as catalyst. Although, the 1,2-additon and 1,4-addition pathways are possible, regiochemistry of the products show a 1, 4- addition is preferred pathway for these reactions. | ||
| Keywords | ||
| organometallic chemistry; platinum; Catalyst; homogeneous; hydrosylilation | ||
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