Material Safety Data Sheet Section 1. Identification of the substance Product Name: 3-Methylthiophenylboronic acid, pinacol ester Synonyms: Section 2. Hazards identification Harmful by inhalation, in contact with skin, and if swallowed. Section 3. Composition/information on ingredients. Ingredient name: 3-Methylthiophenylboronic acid, pinacol ester CAS number: 710348-63-3 Section 4. First aid measures Skin contact: Immediately wash skin with copious amounts of water for at least 15 minutes while removing contaminated clothing and shoes. If irritation persists, seek medical attention. Eye contact: Immediately wash skin with copious amounts of water for at least 15 minutes. Assure adequate flushing of the eyes by separating the eyelids with fingers. If irritation persists, seek medical attention. Inhalation: Remove to fresh air. In severe cases or if symptoms persist, seek medical attention. Ingestion: Wash out mouth with copious amounts of water for at least 15 minutes. Seek medical attention. Section 5. Fire fighting measures In the event of a fire involving this material, alone or in combination with other materials, use dry powder or carbon dioxide extinguishers. Protective clothing and self-contained breathing apparatus should be worn. Section 6. Accidental release measures Personal precautions: Wear suitable personal protective equipment which performs satisfactorily and meets local/state/national standards. Respiratory precaution: Wear approved mask/respirator Hand precaution: Wear suitable gloves/gauntlets Skin protection: Wear suitable protective clothing Eye protection: Wear suitable eye protection Methods for cleaning up: Mix with sand or similar inert absorbent material, sweep up and keep in a tightly closed container for disposal. See section 12. Environmental precautions: Do not allow material to enter drains or water courses. Section 7. Handling and storage Handling: This product should be handled only by, or under the close supervision of, those properly qualified in the handling and use of potentially hazardous chemicals, who should take into account the fire, health and chemical hazard data given on this sheet. Store in closed vessels. Storage: Section 8. Exposure Controls / Personal protection Engineering Controls: Use only in a chemical fume hood. Personal protective equipment: Wear laboratory clothing, chemical-resistant gloves and safety goggles. General hydiene measures: Wash thoroughly after handling. Wash contaminated clothing before reuse. Section 9. Physical and chemical properties Appearance: Not specified Boiling point: No data No data Melting point: Flash point: No data Density: No data Molecular formula: C13H19BO2S Molecular weight: 250.2 Section 10. Stability and reactivity Conditions to avoid: Heat, flames and sparks. Materials to avoid: Oxidizing agents. Possible hazardous combustion products: Carbon monoxide, sulfur oxides. Section 11. Toxicological information No data. Section 12. Ecological information No data. Section 13. Disposal consideration Arrange disposal as special waste, by licensed disposal company, in consultation with local waste disposal authority, in accordance with national and regional regulations. Section 14. Transportation information Non-harzardous for air and ground transportation. Section 15. Regulatory information No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302, or have known CAS numbers that exceed the threshold reporting levels established by SARA Title III, Section 313.
Lewis Acid–Base Interaction‐Controlled
<i>ortho</i>
‐Selective C−H Borylation of Aryl Sulfides
作者:Hong Liang Li、Yoichiro Kuninobu、Motomu Kanai
DOI:10.1002/anie.201610041
日期:2017.2
iridium/bipyridine‐catalyzedortho‐selectiveC−Hborylation of aryl sulfides was developed. High ortho‐selectivity was achieved by a Lewis acid–base interaction between a boryl group of the ligand and a sulfur atom of the substrate. This is the first example of a catalytic and regioselective C−H transformation controlled by a Lewis acid–base interaction between a ligand and a substrate. The C−Hborylation reaction
is the ubiquitous and hypoxia‐induced isoform of PFK‐2, are reported. X‐ray crystallography and docking were instrumental in the design and optimisation of a series of N‐aryl6‐aminoquinoxalines. The most potent representative, N‐(4‐methanesulfonylpyridin‐3‐yl)‐8‐(3‐methyl‐1‐benzothiophen‐5‐yl)quinoxalin‐6‐amine, displayed an IC50 of 14 nm for the target and an IC50 of 0.49 μm for fructose‐2,6‐biphosphate
癌细胞的能量和生物质生产在很大程度上被有氧糖酵解所支持,这就是所谓的Warburg效应。该过程受关键酶的调节,其中磷酸果糖激酶PFK-2通过产生果糖-2,6-二磷酸而起重要作用。磷酸果糖激酶PFK-1执行的最有效的糖酵解限速步骤激活剂。本文介绍了6-磷酸果糖-2-激酶/果糖-2,6-二磷酸酯酶3(PFKFB3)的新型抑制剂的合成,生物学评估以及其结构与活性之间的关系,PFKFB3是一种普遍存在且由低氧引起的PFK-2亚型,被报道。X射线晶体学和对接有助于设计和优化一系列N-芳基6-氨基喹喔啉。最有力的代表,N-(4-甲磺酰基吡啶-3-基)-8-(3-甲基-1-苯并噻吩-5-基)喹喔啉-6-胺,目标物的IC 50为14 n m,0.4的IC 50为0.49μm m为人类结肠癌HCT116细胞中果糖2,6-二磷酸的产生。这项工作为PFKFB3抑制剂领域的发展提供了新的机会。
Modular Dual-Tasked C–H Methylation via the Catellani Strategy
We report a dual-tasked methylation based on cooperative palladium/norbornene catalysis. Readily available (hetero)aryl halides (39 iodides and 4 bromides) and inexpensive MeOTs or trimethylphosphate are utilized as the substrates and meth-ylating reagent, respectively. Six types of ipso terminations can modularly couple with this ortho C-H methylation to consti-tute a versatile methylation toolbox
Method for preparing aminoarylborane compounds or derivatives thereof
申请人:Université de Bordeaux I
公开号:EP2881398A1
公开(公告)日:2015-06-10
The present invention provides a process for the preparation of aminoarylborane compounds and derivatives thereof comprising a step of arylation by reacting an aryl chloride with an aminoborane compound in the presence of a catalytic system.
Typically, the transformation comprises, converting Aryl-chloride Ar-Cl with an aminoborane such as
into an aminoarylborane compound of the following formula:
Merging Electron Transfer with 1,2‐Metalate Rearrangement: Deoxygenative Arylation of Aromatic Amides with Arylboronic Esters
作者:Jiwen Jiao、Xiaoming Wang
DOI:10.1002/anie.202104359
日期:2021.7.26
rearrangement, a wide range of aromaticamides react smoothly with arylboron reagents, affording a series of biologically relevant diarylmethylamines as deoxygenative C−C bond cross-coupling products. With its simplicity and versatility, this reaction shows great promise in the synthesis of amines from amides, which may open up new avenues in retrosynthetic planning and find widespread use in academia