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Stereoselective alpha-olefin coordination to chiral organoplatinum(II) complexes

机译:立体选择性α-烯烃配位的手性有机铂(II)配合物

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摘要

Very high (>95%) stereoselectivity of alpha-olefin coordination is observed in a new class of chiral platinum(II) complexes of the general formula [Pt(eta(2)-CH2=CHR){cis-1-(N=CHC6H4)-2-(N=CHPh)C6H10}]BF4 and [Pt(eta(2)-CH2=CHR){trans-1-(=CHC6H4)-2-(N=CHPh)C6H10}]BF4 (R = H, Me, Ph, 4-Me-C6H4) and is attributed to the steric bulk and asymmetry of the supporting diimine ligands. The first structurally characterized chiral model complex for stereoselective copolymerization of a prochiral olefin by a late-transition-metal complex is described. [References: 25]
机译:在通式[Pt(eta(2)-CH2 = CHR){cis-1-(N =)的新型手性铂(II)配合物中观察到了很高的α-烯烃配体立体选择性(> 95%) CHC6H4)-2-(N = CHPh)C6H10}] BF4和[Pt(eta(2)-CH2 = CHR){trans-1-(= CHC6H4)-2-(N = CHPh)C6H10}] BF4(R = H,Me,Ph,4-Me-C6H4),并归因于支持的二亚胺配体的空间体积和不对称性。描述了用于前手性烯烃通过后过渡金属配合物的立体选择性共聚的第一种结构表征的手性模型配合物。 [参考:25]

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