期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 132, 期 50, 页码 17701-17703出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja1089759
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资金
- NIGMS [R01 GM035249]
- NSF [CHE-0848460]
- Merck Co., Inc.
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [0848460] Funding Source: National Science Foundation
Although much current research focuses on developing new boron reagents and identifying robust catalytic systems for the cross-coupling of these reagents, the fundamental preparations of the nucleophilic partners (i.e., boronic acids and derivatives) has been studied to a lesser extent. Most current methods to access boronic acids are indirect and require harsh conditions or expensive reagents. A simple and efficient palladium-catalyzed, direct synthesis of arylboronic acids from the corresponding aryl chlorides using an underutilized reagent, tetrahydroxydiboron B-2(OH)(4), is reported. To ensure preservation of the carbon-boron bond, the boronic acids were efficiently converted to the trifluoroborate derivatives in good to excellent yields without the use of a workup or isolation. Further, the intermediate boronic acids can be easily converted to a wide range of useful boronates. Finally, a two-step, one-pot method was developed to couple two aryl chlorides efficiently in a Suzuki-Miyaura-type reaction.
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