Nickel-catalyzed cross-coupling of sterically hindered 1-bromomethyl-o-carborane with alkyl and aryl Grignard reagents
作者:Juyou Lu、Hong Wan、Yunna Xue、Yongmei Du、Jian Lu
DOI:10.1016/j.tet.2015.08.022
日期:2015.10
A convenient and efficient Ni-catalyzed reaction has been developed for synthesis of mono-substituted o-carboranes, involving cross-coupling of readily available and stericallyhindered 1-bromomethyl-o-carborane with various alkyl and aryl Grignardreagents under mild conditions, and the corresponding o-carborane derivatives were obtained in good to excellent yields. This method should provide a new
High Yielding Preparation of Dicarba-<i>closo</i>-dodecaboranes Using a Silver(I) Mediated Dehydrogenative Alkyne-Insertion Reaction
作者:Antonio Toppino、Afaf R. Genady、Mohamed E. El-Zaria、James Reeve、Fargol Mostofian、Jeff Kent、John F. Valliant
DOI:10.1021/ic400928v
日期:2013.8.5
The synthesis of 1,2-dicarba-closo-dodecaboranes (ortho-carboranes) is often low yielding which is a critical issue given the increasing use of boron clusters in material science and medicinal chemistry. To address this barrier, a series of Cu, Ag, and Au salts were screened to identify compounds that would enhance the yields of ortho-caboranes produced when treating alkynes with B10H12(CH3CN)2. Using
合成1,2- dicarba-闭合碳-dodecaboranes(邻-carboranes)通常低产其是给定的在材料科学和药物化学越来越多地使用硼簇的一个关键问题。为了解决这一障碍,对一系列的铜,银和金盐进行了筛选,以鉴定出可提高用B 10 H 12(CH 3 CN)2处理炔烃时产生的邻环硼烷的收率的化合物。使用各种官能化的配体,包括单官能团和多官能团的内部和末端炔烃,当以催化量使用AgNO 3时,产率会显着提高。硝酸银3 似乎可以防止在碳硼烷形成之前炔烃的不希望的还原/氢硼化,并且该方法与芳基,卤素,羟基,腈,氨基甲酸酯和羰基官能化的炔烃兼容。
[EN] CARBORANE HYDROXAMIC ACID MATRIX METALLOPROTEINASE AGENTS FOR BORON NEUTRON CAPTURE THERAPY<br/>[FR] AGENTS DE MÉTALLOPROTÉINASE MATRICIELLE D'ACIDE HYDROXAMIQUE CARBORANE POUR UNE THÉRAPIE DE CAPTURE DE NEUTRONS DE BORE
申请人:UNIV LOYOLA CHICAGO
公开号:WO2020252439A1
公开(公告)日:2020-12-17
Disclosed herein are novel carborane hydroxamic acid matrix metalloproteinase ("MMP") agents bearing borane-containing moieties and methods for their use in treating or preventing a disease, such as cancer and rheumatoid arthritis. In particular, disclosed herein are compounds of Formula (I) and (II) and pharmaceutically acceptable salt thereof: wherein the substituents are as described.
High Yielding Synthesis of Carboranes Under Mild Reaction Conditions Using a Homogeneous Silver(I) Catalyst: Direct Evidence of a Bimetallic Intermediate
作者:Mohamed E. El‐Zaria、Kunal Keskar、Afaf R. Genady、Joseph A. Ioppolo、James McNulty、John F. Valliant
DOI:10.1002/anie.201311012
日期:2014.5.12
Methods used to prepare functionalized carboranes generally require heating to high temperatures, and thus limits the range of derivatives which can be prepared directly from alkynes. We show here that by using a homogeneous silver(I) catalyst it is now possible to prepare carboranes in good to excellent yield at temperatures below 40 °C, including at room temperature. The process is general and provides