Material Safety Data Sheet Section 1. Identification of the substance Product Name: 4-Methyl-3-nitrophenylboronic acid pinacol ester Synonyms: 4,4,5,5-Tetramethyl-2-(4-methyl-3-nitrophenyl)-1,3,2-dioxaborolane Section 2. Hazards identification Harmful by inhalation, in contact with skin, and if swallowed. Section 3. Composition/information on ingredients. Ingredient name: 4-Methyl-3-nitrophenylboronic acid pinacol ester CAS number: 1072945-06-2 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: C13H18BNO4 Molecular weight: 263.1 Section 10. Stability and reactivity Conditions to avoid: Heat, flames and sparks. Materials to avoid: Oxidizing agents. Possible hazardous combustion products: Carbon monoxide, nitrogen 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.
Iron Catalysis and Water: A Synergy for Refunctionalization of Boron
摘要:
A new catalytic system has been optimized to promote the conversion of boron species into others. FeCl3 associated with imidazole and water favors boron refunctionalization under mild conditions.
Structure-based design, synthesis, and evaluation of inhibitors with high selectivity for PARP-1 over PARP-2
作者:Jiang Yu、Lingling Luo、Tong Hu、Yating Cui、Xiao Sun、Wenfeng Gou、Wenbin Hou、Yiliang Li、Tiemin Sun
DOI:10.1016/j.ejmech.2021.113898
日期:2022.1
polymerase (PARP) inhibitors play a crucial role in cancer therapy. However, most approved PARP inhibitors have lower selectivity to PARP-1 than to PARP-2, so they will inevitably have side effects. Based on the different catalytic domains of PARP-1 and PARP-2, we developed a strategy to design and synthesize highly selectivePARP-1inhibitors. Compounds Y17, Y29, Y31 and Y49 showed excellent PARP-1 inhibition
The present invention relates to substituted benzo-imidazo-pyrido-diazepine compounds and methods of synthesizing these compounds. The present invention also relates to pharmaceutical compositions containing substituted benzo-imidazo-pyrido-diazepine compounds and methods of treating cell proliferative disorders, such as cancer, by administering these compounds and pharmaceutical compositions to subjects in need thereof.
Miyaura Borylation and One-Pot Two-Step Homocoupling of Aryl Chlorides and Bromides under Solvent-Free Conditions
作者:Pavel B. Dzhevakov、Maxim A. Topchiy、Daria A. Zharkova、Oleg S. Morozov、Andrey F. Asachenko、Mikhail S. Nechaev
DOI:10.1002/adsc.201500844
日期:2016.3.17
borylation and the one‐pot, two‐step homocoupling of aryl halides are reported for the first time. Bis(dibenzylideneacetone)palladium(0) [Pd(dba)2] is an optimal source of palladium for Miyaura borylation, while for one‐pot two‐step homocoupling palladium(II) acetate [Pd(OAc)2] gives highest yields. Aryl bromides are coupled most efficiently using the DPEphos ligand. Chlorides are coupled using XPhos. The
The present invention relates to substituted benzo[f]imidazo[1,2-d]pyrido[2,3-b][1,4]diazepine compounds and methods of synthesizing these compounds. The present invention also relates to pharmaceutical compositions containing substituted benzo[f]imidazo[1,2-d]pyrido[2,3-b][1,4]diazepine compounds and methods of treating cell proliferative disorders, such as cancer, by administering these compounds and pharmaceutical compositions to subjects in need thereof.