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One-step multicomponent synthesis of chiral oxazolinyl-zinc complexes

机译:一步多组分合成手性恶唑啉基锌配合物

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摘要

Background Typically, oxazolinyl metal complexes are synthesized in two steps, where the free ligand is prepared by the condensation reaction between a functionalized nitrile and an amino alcohol in the presence of a Lewis or Brønsted acid catalyst, followed by a further reaction with metal salts to obtain the corresponding metal complexes. Very often, the yield afforded by the two-step procedure is not high, and very few oxazolinyl zinc complexes have been prepared by this route. Given that metal-oxazoline complexes often contain Lewis acidic metals, it is conceivable that the two steps may be telescoped. Results A series of novel chiral organozinc complexes 1–15 were assembled in a single step, All crystalline compounds were fully characterized, including the report of 15 X-ray crystal structures, including a wide structural diversity. Conclusions A series of novel chiral organozinc complexes were assembled in a single step, from nitriles, chiral D/L amino alcohols, and a stoichiometric amount of ZnCl2, with moderate to high yields (20–90%).
机译:背景技术通常,恶唑啉基金属络合物分两步合成,其中游离配体通过在路易斯或布朗斯台德酸催化剂的存在下,官能化的腈与氨基醇之间的缩合反应制备,然后与金属盐进一步反应生成获得相应的金属配合物。通常,两步法提供的产率不高,并且通过这种途径制备的恶唑啉基锌络合物非常少。考虑到金属-恶唑啉配合物通常包含路易斯酸性金属,可以想象这两个步骤可以伸缩。结果在一个步骤中组装了一系列新型手性有机锌配合物1-15,对所有晶体化合物进行了全面表征,包括15个X射线晶体结构的报告,包括广泛的结构多样性。结论从腈,手性D / L氨基醇和化学计量的ZnCl2一步一步组装了一系列新型手性有机锌配合物,具有中等至高产率(20-90%)。

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