Synthesis and crystal structures of the first <em>C</em><sub>2</sub>-symmetric bis-aldimine NCN-pincer complexes of platinum and palladium期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Synthesis and crystal structures of the first C₂-symmetric bis-aldimine NCN-pincer complexes of platinum and palladium

Authors:	John S Fossey Mark L Russell Christopher J Richards

Institution:	^a Department of Chemistry, University of Bath, Bath BA2 7AY, UK ^b School of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, UK ^c School of Biological and Chemical Sciences, Queen Mary, University of London, Mile End Road E1 4NS, UK

Abstract:	(S,S)-2,6-bis(N-α-methylbenzyl)imino]phenylpalladium bromide was synthesised by oxidative addition of palladium(0) to (S,S)-1-bromo-2,6-bis(N-α-methylbenzyl)imino]benzene. In contrast, (S,S)-2,6-bis(N-α-methylbenzyl)imino]phenylplatinum chloride was synthesised by direct C-H activation from the reaction of potassium tetrachloroplatinate with (S,S)-1,3-bis(N-α-methylbenzyl)imino]benzene. The X-ray crystal structures of both pincer complexes were obtained. Treatment of both complexes with silver hexafluoroanimonate gave effective but not stereoselective catalysts for a Michael reaction between methyl vinyl ketone and methyl 2-cyanopropanoate.

Keywords:	Pincer complex NCN Platinum Palladium Catalysis Aldimine
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