New Approach to the Synthesis of 3-Alkyl-1,2-dicarba-closo-dodecaboranes: Reaction of Alkyldichloroboranes with Thallium Dicarbollide

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• 作者：Alexander V. Safronov ; Natalia I. Shlyakhtina ; M. Frederick Hawthorne
• 刊名：Organometallics
• 出版年：2012
• 出版时间：April 9, 2012
• 年：2012
• 卷：31
• 期：7
• 页码：2764-2769
• 全文大小：263K
• 年卷期：v.31,no.7(April 9, 2012)
• ISSN：1520-6041

文摘

A number of 3-alkyl-substituted 1,2-dicarba-closo-dodecaboranes were prepared in good yields via the reaction of alkyldichloroboranes, which were generated in situ through hydroboration of the corresponding alkenes with a dichloroborane鈥揹ioxane complex, with thallium dicarbollides in anhydrous dichloromethane at room temperature. This reaction also affords insertion products with new thallium dicarbollides prepared from 3-iodo- and 9-iodo-1,2-dicarba-closo-dodecaboranes. The synthesized 3-alkyl-1,2-dicarba-closo-dodecaboranes can be selectively deboronated at the B(6) atom to form the anionic 3-alkyl-7,8-dicarba-nido-undecaborates. All compounds were characterized by NMR and MS techniques.