Fluoroboron compound, aminomethylating agent for aromatic ring made of the same, and production method of compound containing aminomethyl aromatic ring using aminomethylating agent
Synthesis and Properties of Secondary Thiocarbamoylsilanes
作者:Toshiaki Murai、Rumi Hori
DOI:10.1246/bcsj.20090231
日期:2010.1.15
influenced by the substituents on the aromatic ring: electron-withdrawing groups decreased the yield. No reaction occurred with thioformamides having secondaryalkyl groups on the nitrogen atom, whereas the reaction of those with primary alkyl groups proceeded smoothly to form the corresponding thiocarbamoylsilanes. Initially, deprotonation takes place at the nitrogen atom to generate lithium thioimidates
二级硫代甲酰胺与过量的 LDA 和 Me 3 SiCl 在 -78 °C 下反应。甲硅烷基被选择性地引入到硫代羰基碳原子上,得到仲硫代氨基甲酰基硅烷。Me 2 PhSiCl 和 t-BuMe 2 SiCl 的使用产生了产率降低的类似产品。虽然多种N-芳基甲基硫代甲酰胺参与了硅烷化反应,但产物的产率受芳环上取代基的影响:吸电子基团降低了产率。与氮原子上具有仲烷基的硫代甲酰胺不发生反应,而具有伯烷基的硫代甲酰胺反应顺利进行,形成相应的硫代氨基甲酰基硅烷。最初,在氮原子上发生去质子化以生成硫代亚胺酸锂,然后用氯硅烷甲硅烷基化,形成硫代亚胺甲硅烷酯。过量的 LDA 使亚胺酸碳原子上的硫代亚胺甲硅烷基去质子化,生成硫代亚胺甲硅烷基锂,其经历反向布鲁克重排以形成在亚胺碳原子上带有甲硅烷基的硫代亚胺酸锂。中间体的水解可能导致二级硫代氨基甲酰基硅烷的形成。在硫代氨基甲酰基硅烷的紫外-可见光谱中,归因于 n-π*
METALLOPROTEIN INHIBITORS
申请人:Puerta T. David
公开号:US20070117848A1
公开(公告)日:2007-05-24
The present invention relates to metalloprotein inhibitors comprising: a. an organic substituent and at least one zinc binding group (ZBG) covalently attached thereto; or
b. a ZBG substituted by a side chain wherein the ZBG is of formula (I):
wherein X is O or S and each R
1
, R
2
, R
3
, and R
4
is individually hydrogen or an organic radical. The metalloprotein inhibitors are useful for preventing or treating a pathological disease, condition, or symptom that is associated with pathological metalloprotein activity and/or that is alleviated by inhibition of said activity.
FLUOROBORON COMPOUND, AMINOMETHYLATING AGENT FOR AROMATIC RING MADE OF THE SAME, AND PRODUCTION METHOD OF COMPOUND CONTAINING AMINOMETHYL AROMATIC RING USING AMINOMETHYLATING AGENT
申请人:TANAKA Keigo
公开号:US20120010403A1
公开(公告)日:2012-01-12
A production method of a compound containing a primary, secondary, or tertiary aminomethyl aromatic ring of the present invention includes: using a fluoroboron compound or a dimer thereof, or solvates thereof, which are represented by a formula (I):
Ra(Rb)N—CH
2
—BF
3
M (I)
as an aminomethylating agent for an aromatic ring; and reacting the aminomethylating agent with an aromatic ring-containing compound, which can react with the aminomethylating agent, under the presence of a metal catalyst such as a palladium compound so as to perform the direct aminomethylation of the aromatic ring.
Effective
<i>N</i>
‐formylation of Amines with CO
<sub>2</sub>
in Anaerobic Fermentation Gas Catalyzed by Triply Synergistic Effect of Ionic Porous Organic Polymer
Purification of AnaerobicFermentationGas and Utilization of CO2: Novel ionicporousorganicpolymer catalyst with triplysynergistic catalytic effect is synthesized, and is successfully applied to the direct conversion of CO2 in anaerobicfermentationgas (AFG) into formamides via N-formylation reaction. The catalyst can be easily recovered and reused. This work provides a new idea for the purification
Direct Synthesis of N‐formamides by Integrating Reductive Amination of Ketones and Aldehydes with CO<sub>2</sub> Fixation in a Metal‐Organic Framework
作者:Wenyuan Huang、Qingqing Mei、Shaojun Xu、Bing An、Meng He、Jiangnan Li、Yinlin Chen、Xue Han、Tian Luo、Lixia Guo、Joseph Hurd、Daniel Lee、Evan Tillotson、Sarah J. Haigh、Alex Walton、Sarah J. Day、Louise S. Natrajan、Martin Schröder、Sihai Yang
DOI:10.1002/chem.202303289
日期:2024.2
Ru/MFM-300(Cr) was used as catalyst for the one-pot N-formylation of both aldehydes and ketones (30 substrates) in high yield. Synchrotron PXRD reveals the activation of carbonyl compounds via confined binding within MFM-300(Cr). Nuclear magnetic resonance (NMR) spectroscopic analysis and control experiments suggest formate species as the intermediate derived from the reduction of CO2 and reveal the