4 research outputs found

    A New Route to Chiral Diaryldiacetylenic Liquid Crystals. Preparation of Iodonium Salts Bearing Chiral Alkynyl Ligands and Utility for Chiral Alkynyl Transfer Agents

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    A New Route to Chiral Diaryldiacetylenic Liquid Crystals. Preparation of Iodonium Salts Bearing Chiral Alkynyl Ligands and Utility for Chiral Alkynyl Transfer Agent

    The First Isolation and Structural Characterization of a Lanthanoid−Imine Azametallacyclopropane Complex, [Yb(η<sup>2</sup>-Ph<sub>2</sub>CNPh)(hmpa)<sub>3</sub>]

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    A dianionic lanthanoid(II)−imine azametallacyclopropane complex, [Yb(η2-Ph2CNPh)(hmpa)3] (hmpa = hexamethylphosphoramide), has been directly synthesized by the reaction of ytterbium metal with N-(diphenylmethylidene)aniline in THF/HMPA and structurally characterized by X-ray analysis

    Three-Component Coupling of Acylphosphonates and Two Carbonyl Compounds Promoted by Low-Valent Samariums:  One-Pot Synthesis of β-Hydroxyphosphonates

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    Three-component coupling of acylphosphonates and two carbonyl compounds leading to β-hydroxyphosphonates has been achieved with low-valent samariums. Thus, acylphosphonates reacted with aldehydes in the presence of semicatalytic amounts of samarium metal or SmI2 to give acyloxyphosphonates in good yields. The second coupling reaction of the acyloxyphosphonates with aldehydes or ketones promoted by SmI2 afforded β-hydroxyphosphonates instead of olefins. Moreover, these two reactions could be carried out in one pot
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