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Reductive Hexamerization of CO Involving Cooperativity Between Magnesium(I) Reductants and [Mo(CO)6]: Synthesis of Well-Defined Magnesium Benzenehexolate Complexes.
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-09-24 , DOI: 10.1002/anie.202009523 Albert Paparo 1 , K Yuvaraj 1 , Aidan J R Matthews 1 , Iskander Douair 2 , Laurent Maron 2 , Cameron Jones 1
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-09-24 , DOI: 10.1002/anie.202009523 Albert Paparo 1 , K Yuvaraj 1 , Aidan J R Matthews 1 , Iskander Douair 2 , Laurent Maron 2 , Cameron Jones 1
Affiliation
Reactions of two magnesium(I) compounds, [{(ArNacnac)Mg}2] (ArNacnac=[HC(MeCNAr)2]−; Ar=mesityl (Mes) or o‐xylyl (Xyl)), with CO in the presence of [Mo(CO)6] lead to the reductive hexamerization of CO, and formation of magnesium benzenehexolate complexes, [{(ArNacnac)Mg}6(C6O6)]. [Mo(CO)6] is not consumed in these reactions, but is apparently required to initiate (or catalyze) the CO hexamerizations. A range of studies were used to probe the mechanism of formation of the benzenehexolate complexes. The magnesium(I) reductive hexamerizations of CO are closely related to Liebig's reduction of CO with molten potassium (to give K6C6O6, amongst other products), originally reported in 1834. As the mechanism of that reaction is still unknown, it seems reasonable that magnesium(I) reductions of CO could prove useful homogeneous models for its elucidation, and for the study of other C−C bond forming reactions that use CO as a C1 feedstock (e.g. the Fischer–Tropsch process).
中文翻译:
涉及镁(I)还原剂与[Mo(CO)6]之间的协同作用的CO的还原六聚体:定义明确的苯并己醇镁配合物的合成。
两种镁(I)化合物[{(Ar Nacnac)Mg} 2 ](Ar Nacnac = [HC(MeCNAr)2 ] -; Ar = mesityl(Mes)或邻二甲苯基(Xyl))与CO的反应[Mo(CO)6 ]的存在会导致CO的还原六聚反应,并形成苯己酸镁复合物[{(Ar Nacnac)Mg} 6(C 6 O 6)。[Mo(CO)6在这些反应中不消耗1,3,3,4-二氧噻吩,但显然是引发(或催化)CO六聚化所必需的。进行了一系列研究,以探讨苯己酸酯络合物形成的机理。CO的镁(I)还原六聚反应与Liebig用熔融钾还原CO(产生K 6 C 6 O 6以及其他产品)还原CO密切相关,由于该反应的机理仍然未知,镁(I)还原CO可以证明其阐明和用于研究其他使用CO作为C 1原料的其他C-C键形成反应的合理模型(例如Fischer-Tropsch工艺)是合理的。
更新日期:2020-09-24
中文翻译:
涉及镁(I)还原剂与[Mo(CO)6]之间的协同作用的CO的还原六聚体:定义明确的苯并己醇镁配合物的合成。
两种镁(I)化合物[{(Ar Nacnac)Mg} 2 ](Ar Nacnac = [HC(MeCNAr)2 ] -; Ar = mesityl(Mes)或邻二甲苯基(Xyl))与CO的反应[Mo(CO)6 ]的存在会导致CO的还原六聚反应,并形成苯己酸镁复合物[{(Ar Nacnac)Mg} 6(C 6 O 6)。[Mo(CO)6在这些反应中不消耗1,3,3,4-二氧噻吩,但显然是引发(或催化)CO六聚化所必需的。进行了一系列研究,以探讨苯己酸酯络合物形成的机理。CO的镁(I)还原六聚反应与Liebig用熔融钾还原CO(产生K 6 C 6 O 6以及其他产品)还原CO密切相关,由于该反应的机理仍然未知,镁(I)还原CO可以证明其阐明和用于研究其他使用CO作为C 1原料的其他C-C键形成反应的合理模型(例如Fischer-Tropsch工艺)是合理的。