Regioselective Borylation of the C–H Bonds in Alkylamines and Alkyl Ethers. Observation and Origin of High Reactivity of Primary C–H Bonds Beta to Nitrogen and Oxygen
作者:Qian Li、Carl W. Liskey、John F. Hartwig
DOI:10.1021/ja503676d
日期:2014.6.18
Borylation of aliphatic C-H bonds in alkylamines and alkyl ethers to form primary aminoalkyl and alkoxyalkyl boronate esters and studies on the origin of the regioselectivity of these reactions are reported. The products of these reactions can be used directly in Suzuki-Miyaura cross-coupling reactions or isolated as air-stable potassium trifluoroborate salts. Selective borylation of the terminal C-H
A Cobalt-Catalyzed Alkene Hydroboration with Pinacolborane
作者:Lei Zhang、Ziqing Zuo、Xuebing Leng、Zheng Huang
DOI:10.1002/anie.201310096
日期:2014.3.3
efficient cobalt catalyst for the hydroboration of both vinylarenes and aliphatic α‐olefins with pinacolborane is described, providing the anti‐Markovnikov products with excellent regio‐ and chemoselectivity, broad functional‐group tolerance, and high turnover numbers (up to 19 800). The alkenehydroboration route is further extended to a two‐step, one‐pot hydroboration and cross‐coupling of alkylboronates