Stereoselective Anion Template Effects: Syntheses and Molecular Structures of Tetraphenyl [12]Mercuracarborand-4 Complexes of Halide Ions
作者:Zhiping Zheng、Carolyn B. Knobler、M. Frederick Hawthorne
DOI:10.1021/ja00123a012
日期:1995.5
The synthesis and characterization of the chloride and iodideioncomplexes of a set of isomeric hydrophobictetraphenyl ( 12lmercuracarborand-4 hosts havingstericallyencumberedcavities are described. These compounds ((3-C6Hs-1,2-C2B10H9Hg)4) *XLi (3*XLi, X = C1- and I-) were prepared by the reaction of the corresponding mercuric halides with cZoso-3-Ph-l,2-Liz-1,2-C2BloHg. The presence of phenyl
Visible-Light-Promoted Photocatalytic B−C Coupling via a Boron-Centered Carboranyl Radical: Facile Synthesis of B(3)-Arylated<i>o</i>-Carboranes
作者:Da Zhao、Zuowei Xie
DOI:10.1002/anie.201511251
日期:2016.2.24
A visible‐light‐mediated in situ generation of a boron‐centered carboranylradical (o‐C2B10H11.) has been described. With eosin Y as a photoredox catalyst, 3‐diazonium‐o‐carborane tetrafluoroborate [3‐N2‐o‐C2B10H11][BF4] was converted into the corresponding boron‐centered carboranylradical intermediate, which can undergo efficient electrophilic substitution reaction with a wide range of (hetero)arenes
Regioselective Insertion of Carborynes into Ethereal C−H Bond: Facile Synthesis of α-Carboranylated Ethers
作者:Sunewang R. Wang、Zaozao Qiu、Zuowei Xie
DOI:10.1021/ja201126h
日期:2011.4.20
Carborynes can exist in two resonance forms, bonding form vs biradical form. The biradical form can be readily generated via the elimination of LiI from 1-iodo-n-lithio-1,n-C(2)B(10)H(10) (n = 2, 7) under UV irradiation. They can undergo α-C-Hbondinsertion with aliphatic ethers, affording α-carboranylated ethers in excellent regioselectivity at room temperature. This serves as a new methodology for
Ir-Catalyzed Selective B(3)-H Amination of <i>o</i>-Carboranes with NH<sub>3</sub>
作者:Yik Ki Au、Jie Zhang、Yangjian Quan、Zuowei Xie
DOI:10.1021/jacs.1c00593
日期:2021.3.24
Ammonia gas, NH3, is a cheap and widely used industrial feedstock, which has received tremendous research interests in its functionalization. This work reports a breakthrough in catalytic selective cage B(3)-H amination of o-carboranes with NH3 via Ir-catalyzed B-H/N-H dehydrocoupling, offering convenient and efficient access to a series of 3-NH2-o-carborane derivatives in moderate to high isolated
Synthesis of cobalt and nickel 6,6′-diphenylbis(dicarbollides)
作者:A. V. Shmal’ko、S. A. Anufriev、A. A. Anisimov、M. Yu. Stogniy、I. B. Sivaev、V. I. Bregadze
DOI:10.1007/s11172-019-2547-7
日期:2019.6
with pyridine resulted in the elimination of one ethyl group to give the corresponding ethoxy derivatives. The structures of nido-carborane 10-diethyloxonium derivative and cobalt bis(dicarbollide) 6,6′-diphenyl derivative were established by X-ray diffraction analysis.