Direct introduction of a naphthalene-1,8-diamino boryl [B(dan)] group by a Pd-catalysed selective boryl transfer reaction
作者:Liang Xu、Pengfei Li
DOI:10.1039/c5cc00231a
日期:——
reagent, B(pin)-B(dan), has been utilised in the Pd-catalysed borylation of aryl bromides and chlorides. Remarkably selective formation of aryl-B(dan) bonds is established. This represents a direct and efficient way to introduce masked boronic acids. The synthetic usefulness of this reaction is demonstrated in the preparation of boron-differentiated di- and polyboron compounds.
Synthesis of masked haloareneboronic acids via iridium-catalyzed aromatic C–H borylation with 1,8-naphthalenediaminatoborane (danBH)
作者:Noriyuki Iwadate、Michinori Suginome
DOI:10.1016/j.jorganchem.2008.11.068
日期:2009.5
"Masked" areneboronic acids have been prepared by Ir-catalyzed C-H borylation of arenes. A [Ir(OMe)(cod)](2) complex with a DPPE ligand showed the highest catalytic activity in the C-H borylation of benzene at 80 degrees C. The reaction system can be applied to substituted arenes, including halogen-substituted arenes. 1,3-Dihalobenzenes undergo the C-H borylation at their 5-positions in a regioselective fashion, affording 3,5-dihaloareneboronic acid derivatives, which serve as useful coupling modules for the convergent dendrimer synthesis. (C) 2008 Elsevier B.V. All rights reserved.
Amine-Borane Complexes: Air- and Moisture-Stable Partners for Palladium-Catalyzed Borylation of Aryl Bromides and Chlorides
作者:Hélène D. S. Guerrand、Michel Vaultier、Sandra Pinet、Mathieu Pucheault
DOI:10.1002/adsc.201401153
日期:2015.4.13
amine–borane complexes directly in palladium catalyzed borylation has been developed. The reaction proceeds through the sequential formation of a boronium species followed by deprotonation leading to the aminoborane. This reagent is then directly used in the borylation process leading, after work‐up, to various boronic acid derivatives. The reaction was applied to (hetero)aryl triflates, iodides, bromides
Efficient one-pot synthesis of dan-substituted organo- and silyl-boron compounds
作者:Kazuki Tomota、Yuki Izumi、Kazuki Nakanishi、Masaaki Nakamoto、Hiroto Yoshida
DOI:10.1039/d3ob00613a
日期:——
B(dan)-installation into organic frameworks has been developed. Heteroaryl–H bonds were transformable into the respective heteroaryl–B(dan) bonds through deprotonation. The resulting heteroaryl–B(dan) compounds, which are otherwise difficult to access, can undergo the direct Suzuki–Miyaura coupling. The method was demonstrated to apply to a silicon nucleophile, giving Lewis acidity-diminished stable silyl–B(dan)