Uncatalyzed Hydrogenation of First-Row Main Group Multiple Bonds

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• 作者：Dr. Merle Arrowsmith ; Julian Bö ; hnke ; Prof. Dr. Holger Braunschweig ; Dr. Mehmet Ali Celik ; Theresa Dellermann and Kai Hammond
• 刊名：Chemistry - A European Journal
• 出版年：2016
• 出版时间：November 21, 2016
• 年：2016
• 卷：22
• 期：48
• 页码：17169-17172
• 全文大小：564K
• ISSN：1521-3765

文摘

Room temperature hydrogenation of an SIDep-stabilized diboryne (SIDep=1,3-bis(diethylphenyl)-4,5-dihydroimidazol-2-ylidene) and a cAAC-supported diboracumulene (cAAC=1-(2,6-diisopropylphenyl)-3,3,5,5-tetramethylpyrrolidin-2-ylidene) provided the first selective route to the corresponding 1,2-dihydrodiborenes. DFT calculations showed an overall exothermic (ΔG=19.4 kcal mol⁻¹) two-step asynchronous H₂ addition mechanism proceeding via a bridging hydride.