Dibora[10]annulenes: Construction, Properties, and Their Ring-Opening Reactions
作者:Weidong Zhang、Demei Yu、Zhijun Wang、Bingjie Zhang、Letian Xu、Guoping Li、Ni Yan、Eric Rivard、Gang He
DOI:10.1021/acs.orglett.8b03538
日期:2019.1.4
The selective construction of various dibora[10]annulenes through mild boron–tin exchange reactions is reported. Dibora[10]annulenes exhibit optical and electrochemical properties of value for future sensing applications. Controlled addition of the Lewis base pyridine to dibora[10]annulenes instigates a selective ring-opening reaction. This work explores a new area of boron chemistry that represents
Intermolecular insertion reactions of azides into 9-borafluorenes to generate 9,10-B,N-phenanthrenes
作者:Sam Yruegas、Jesse J. Martinez、Caleb D. Martin
DOI:10.1039/c8cc01529e
日期:——
The reactions of 9-borafluorenes with organic azides result in either the insertion of the α-nitrogen and elimination of N2 or the insertion of the γ-nitrogen to generate the corresponding phenanthrene analogues with boron and nitrogen in the 9- and 10-positions, respectively.
Investigating the reactivity of 9-phenyl-9-borafluorene with N H, O H, P H, and S H bonds
作者:Leif E. Laperriere、Sam Yruegas、Caleb D. Martin
DOI:10.1016/j.tet.2018.12.034
日期:2019.2
9-phenyl-9-borafluorene with NH, PH, OH, and SH containing substrates were investigated. Protodeborylation reactions were observed for phenol, water, aniline, and para-bromothiophenol. In the water reaction, both OH bonds reacted with 9-phenyl-9-borafluorene to furnish the oxygen bridged diborane whereas only one of the NH bonds in aniline reacted. Phenylphosphine coordinated to the boron center to give
Coordination and Ring Expansion of 1,2-Dipolar Molecules with 9-Phenyl-9-borafluorene
作者:Kristen R. Bluer、Leif E. Laperriere、Alba Pujol、Sam Yruegas、Venkata A. K. Adiraju、Caleb D. Martin
DOI:10.1021/acs.organomet.8b00497
日期:2018.9.10
9-phenyl-9-borafluorene with a series of 1,2-dipolar organic molecules is investigated, revealing that either adducts or seven-memberedheterocycles are generated. A nitrile, imine, and isonitrile formed the corresponding coordination complexes that showed no evidence of conversion to ring expanded products. An aldehyde, ketone, and ketene inserted the C═O moiety into the endocyclic B–C bond resulting in
Successive carbene insertion into 9-phenyl-9-borafluorene
作者:Tyler A. Bartholome、Kristen R. Bluer、Caleb D. Martin
DOI:10.1039/c9dt01032g
日期:——
The reactions of 9-phenyl-9-borafluorene with trimethylsilyldiazomethane in a 1 : 1 and 1 : 2 stoichiometry furnished the corresponding BC5 and BC6 heterocycles via the formal insertion of one and two carbene units.