Silyl-protected dioxaborinanes: application in the Suzuki cross-coupling reaction
作者:Sean Goggins、Eleanor Rosevere、Clément Bellini、Joseph C. Allen、Barrie J. Marsh、Mary F. Mahon、Christopher G. Frost
DOI:10.1039/c3ob42099j
日期:——
The synthesis of a range of novel silyl-protected dioxaborinanes as a column- and bench-stable boron reagent were found to be advantageous to achieving good yields in palladium-catalysed cross-coupling reactions under standard conditions.
Mechanism and Scope of Nickel-Catalyzed Decarbonylative Borylation of Carboxylic Acid Fluorides
作者:Christian A. Malapit、James R. Bour、Simon R. Laursen、Melanie S. Sanford
DOI:10.1021/jacs.9b08961
日期:2019.10.30
Article describes the development of a base-free, nickel-catalyzeddecarbonylative coupling of carboxylic acid fluorides with diboron reagents to selectively afford aryl boronate ester products. Detailed studies were conducted to assess the relative rates of direct transmetalation between aryl boronate esters and diboron reagents and a bisphosphine nickel(aryl)(fluoride) intermediate. These investigations
Efficient Hydrolysis of Organotrifluoroborates via Silica Gel and Water
作者:Gary A. Molander、Livia N. Cavalcanti、Belgin Canturk、Po-Shen Pan、Lauren E. Kennedy
DOI:10.1021/jo901441u
日期:2009.10.2
and efficient method for the hydrolysis of organotrifluoroborates to unveil boronic acids using silicagel and H2O was developed. This method proved to be tolerant of a broad range of aryl-, heteroaryl-, alkenyl-, and alkyltrifluoroborates as well as structurally diverse aminomethylated organotrifluoroborates. As anticipated, electron-rich substrates provided the corresponding boronic acids more readily
开发了一种使用硅胶和 H 2 O水解有机三氟硼酸盐以揭示硼酸的通用、温和且有效的方法。事实证明,该方法可以耐受各种芳基-、杂芳基-、烯基-和烷基三氟硼酸盐以及结构多样的氨甲基化有机三氟硼酸盐。正如预期的那样,由于共振稳定的二氟硼烷中间体,富电子底物比缺电子底物更容易提供相应的硼酸。开发的方法进一步扩展用于将有机三氟硼酸盐转化为相应的硼酸酯。
Oxygen-Promoted Pd(II) Catalysis for the Coupling of Organoboron Compounds and Olefins
作者:Young Chun Jung、Rajesh Kumar Mishra、Cheol Hwan Yoon、Kyung Woon Jung
DOI:10.1021/ol034458s
日期:2003.6.1
Reported herein is a mild and efficient Pd(II) catalysis, leading to the formation of carbon-carbon bonds between a broad spectrum of organoboroncompounds and alkenes. Molecular oxygen was employed to reoxidize the resultant Pd(0) species back to Pd(II) during catalytic cycles. This oxygen protocol promoted the desired Pd(II) catalysis, whereas it retarded competing Pd(0) catalytic pathways such as
Synthesis of arylboronates by boron-induced ipso-deantimonation of triarylstibanes with boron trihalides and its application in one-pot two-step transmetallation/cross-coupling reactions
The reaction of triarylstibanes (1) with borontrihalides (BCl3, and BBr3) afforded arylboron dihalides (2) by utilizing all the three aryl groups on the antimony. Boron intermediates (2) were transformed to arylboronates (3) in good to excellent yields by treatment with methanol and 1,3-propanediol. Further, the Pd-catalyzed reactions of 2 with organic halides such as 1-bromonaphthalene and benzoyl