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
Mechanistic Studies into Amine-Mediated Electrophilic Arene Borylation and Its Application in MIDA Boronate Synthesis
作者:Viktor Bagutski、Alessandro Del Grosso、Josue Ayuso Carrillo、Ian A. Cade、Matthew D. Helm、James R. Lawson、Paul J. Singleton、Sophia A. Solomon、Tommaso Marcelli、Michael J. Ingleson
DOI:10.1021/ja3100963
日期:2013.1.9
computational study, the borylation of activated arenes at 20 °C proceeds through an S(E)Ar mechanism with borenium cations, [Y(2)B(amine)](+), the key electrophiles. For catecholato-borocations, two amine dependent reaction pathways were identified: (i) With [CatB(NEt(3))](+), an additional base is necessary to accomplish rapid borylation by deprotonation of the borylated arenium cation (σ complex), which otherwise
Beiträge zur chemie der borazide VII. Darstellung und eigenschaften von diorganylboraziden
作者:P.I Paetzold、P.P Habereder、R Müllbauer
DOI:10.1016/s0022-328x(00)90824-6
日期:1967.1
The preparation and some properties of diorganylboron azides R′RBN3 and of some of their pyridinates R′RBN3·Py are described.
介绍了二有机基硼叠氮化物R'RBN 3及其部分吡啶盐R'RBN 3 ·Py的制备及其一些性质。
Regio‐ and Stereoselective 1,2‐Carboboration of Ynamides with Aryldichloroboranes
作者:Cai You、Mika Sakai、Constantin G. Daniliuc、Klaus Bergander、Shigehiro Yamaguchi、Armido Studer
DOI:10.1002/anie.202107647
日期:2021.9.27
Catalyst-free 1,2-carboboration of ynamides is presented. Readily available aryldichloroboranes react with alkyl- or aryl-substituted ynamides in high yields with complete regio- and stereoselectivity to valuable β-boryl-β-alkyl/aryl α-aryl substituted enamides which belong to the class of trisubstituted alkenylboronates. The 1,2-carboboration reaction is experimentally easy to conduct, shows high