Transition-Metal-Free Boryl Substitution Using Silylboranes and Alkoxy Bases

Eiji Yamamoto, Satoshi Maeda, Tetsuya Taketsugu, Hajime Ito

研究成果: Contribution to journalArticle査読

7 被引用数 (Scopus)

抄録

Silylboranes are used as borylation reagents for organohalides in the presence of alkoxy bases without transition-metal catalysts. PhMe 2 Si-B(pin) reacts with a variety of aryl, alkenyl, and alkyl halides, including sterically hindered examples, to provide the corresponding organoboronates in good yields with high borylation/silylation ratios, showing good functional group compatibility. Halogenophilic attack of a silyl nucleophile on organohalides, and subsequent nucleophilic attack on the boron electrophile are identified to be crucial, based on the results of extensive theoretical and experimental studies. This borylation reaction is further applied to the first direct dimesitylboryl (BMes 2) substitution of aryl halides using Ph 2 MeSi-BMes 2 and Na(O- t -Bu), affording aryldimesitylboranes, which are regarded as an important class of compounds for organic materials. 1 Introduction 2 Boryl Substitution of Organohalides with PhMe 2 Si-B(pin)/Alkoxy Bases 3 Mechanistic Investigations 4 DFT Mechanistic Studies Using an Artificial Force Induced Reaction (AFIR) Method 5 Dimesitylboryl Substitution of Aryl Halides with Ph 2 MeSi-BMes 2 /Na(O- t -Bu) 6 Conclusion.

本文言語英語
ページ(範囲)1258-1267
ページ数10
ジャーナルSynlett
28
11
DOI
出版ステータス出版済み - 7 3 2017

All Science Journal Classification (ASJC) codes

  • 有機化学

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