One‐Pot Synthesis of Pyridyltellurium Derivatives from a Reaction with Isopropylmagnesium Chloride and X‐ray Crystal Structures of Various Pyridyl Ditellurides
作者:Kuldip K. Bhasin、Veena Arora、Thomas M. Klapötke、Margaret‐Jane Crawford
DOI:10.1002/ejic.200400297
日期:2004.12
oxidation. The pyridyltelluromagnesium chlorides give unsymmetrical pyridyltellurium derivatives in good yield upon treatment with alkyl halides. The X-ray crystal structures of bis(2-pyridyl) ditelluride, bis(2,5-dibromo-6-methyl-3-pyridyl) ditelluride and bis(2,5-dibromo-3-pyridyl) ditelluride are discussed. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)
在室温下,通过选择性单溴-镁一锅法合成了各种对称和不对称的 2-吡啶基-、2-溴-5-吡啶基-和 2,5-二溴-3-吡啶基碲化合物2-溴-、2,5-二溴-和2,3,5-三溴吡啶分别与异丙基氯化镁交换。该交换反应得到相应的吡啶基氯化镁,在插入元素碲(活化)后,得到吡啶基碲氯化镁,随后在空气氧化时得到相应的二吡啶基二碲化物。在用烷基卤化物处理后,吡啶基碲氯化镁以良好的产率得到不对称的吡啶基碲衍生物。双(2-吡啶基)二碲化物、双(2,5-二溴-6-甲基-3-吡啶基)二碲化物和双(2, 讨论了 5-dibromo-3-pyridyl) 二碲化物。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)