Revision number: 5 Section 2. HAZARDS IDENTIFICATION GHS classification PHYSICAL HAZARDS Not classified HEALTH HAZARDS Skin corrosion/irritation Category 2 Category 2A Serious eye damage/eye irritation ENVIRONMENTAL HAZARDS Not classified GHS label elements, including precautionary statements Pictograms or hazard symbols Signal word Warning Hazard statements Causes skin irritation Causes serious eye irritation Precautionary statements: Wash hands thoroughly after handling. [Prevention] Wear protective gloves/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, [Response] if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice/attention. IF ON SKIN: Gently wash with plenty of soap and water. If skin irritation occurs: Get medical advice/attention. Take off contaminated clothing and wash before reuse. Section 3. COMPOSITION/INFORMATION ON INGREDIENTS Substance/mixture: Substance Components: Butyl Nicotinate Percent: >98.0%(GC) CAS Number: 6938-06-3 Synonyms: Nicotinic Acid Butyl Ester C10H13NO2 Chemical Formula: Section 4. FIRST AID MEASURES Inhalation: Remove victim to fresh air and keep at rest in a position comfortable for breathing. Get medical advice/attention if you feel unwell. Butyl Nicotinate Section 4. FIRST AID MEASURES Skin contact: Remove/Take off immediately all contaminated clothing. Gently wash with plenty of soap and water. If skin irritation or rash occurs: Get medical advice/attention. Eye contact: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice/attention. Ingestion: Get medical advice/attention if you feel unwell. Rinse mouth. A rescuer should wear personal protective equipment, such as rubber gloves and air- Protection of first-aiders: tight goggles. Section 5. FIRE-FIGHTING MEASURES Suitable extinguishing Dry chemical, foam, water spray, carbon dioxide. media: Unsuitable extinguishing Solid streams of water media: Specific hazards arising Take care as it may decompose upon combustion or in high temperatures to from the chemical: generate poisonous fume. Precautions for firefighters: Fire-extinguishing work is done from the windward and the suitable fire-extinguishing method according to the surrounding situation is used. Uninvolved persons should evacuate to a safe place. In case of fire in the surroundings: Remove movable containers if safe to do so. Special protective When extinguishing fire, be sure to wear personal protective equipment. equipment for firefighters: Section 6. ACCIDENTAL RELEASE MEASURES Personal precautions, Use personal protective equipment. Keep people away from and upwind of spill/leak. protective equipment and Entry to non-involved personnel should be controlled around the leakage area by emergency procedures: roping off, etc. Environmental precautions: Prevent product from entering drains. Methods and materials for Sweep dust to collect it into an airtight container, taking care not to disperse it. containment and cleaning Adhered or collected material should be promptly disposed of, in accordance with up: appropriate laws and regulations. Section 7. HANDLING AND STORAGE Precautions for safe handling Technical measures: Handling is performed in a well ventilated place. Wear suitable protective equipment. Prevent dispersion of dust. Wash hands and face thoroughly after handling. Use a local exhaust if dust or aerosol will be generated. Advice on safe handling: Avoid contact with skin, eyes and clothing. Conditions for safe storage, including any incompatibilities Storage conditions: Keep container tightly closed. Store in a cool and dark place. Store away from incompatible materials such as oxidizing agents. Packaging material: Comply with laws. Section 8. EXPOSURE CONTROLS / PERSONAL PROTECTION Engineering controls: Install a closed system or local exhaust as possible so that workers should not be exposed directly. Also install safety shower and eye bath. Personal protective equipment Respiratory protection: Dust respirator. Follow local and national regulations. Hand protection: Protective gloves. Safety glasses. A face-shield, if the situation requires. Eye protection: Skin and body protection: Protective clothing. Protective boots, if the situation requires. Section 9. PHYSICAL AND CHEMICAL PROPERTIES Physical state (20°C): Solid Clear Form: Butyl Nicotinate Section 9. PHYSICAL AND CHEMICAL PROPERTIES Colour: Colorless - Pale yellow Odour: No data available pH: No data available Melting point/freezing point:No data available Boiling point/range: 252°C Flash point: No data available Flammability or explosive limits: Lower: No data available Upper: No data available Relative density: 1.06 Solubility(ies): [Water] No data available [Other solvents] No data available Section 10. STABILITY AND REACTIVITY Stable under proper conditions. Chemical stability: Possibility of hazardous No special reactivity has been reported. reactions: Incompatible materials: Oxidizing agents Hazardous decomposition Carbon monoxide, Carbon dioxide, Nitrogen oxides (NOx) products: Section 11. TOXICOLOGICAL INFORMATION Acute Toxicity: ipr-mus LDLo:63 mg/kg Skin corrosion/irritation: No data available Serious eye No data available damage/irritation: Germ cell mutagenicity: No data available Carcinogenicity: IARC = No data available NTP = No data available Reproductive toxicity: No data available RTECS Number: QT0875000 Section 12. ECOLOGICAL INFORMATION Ecotoxicity: No data available Fish: Crustacea: No data available No data available Algae: Persistence / degradability: No data available No data available Bioaccumulative potential(BCF): Mobility in soil Log Pow: No data available No data available Soil adsorption (Koc): Henry's Law No data available constant(PaM3/mol): Section 13. DISPOSAL CONSIDERATIONS Recycle to process, if possible. Consult your local regional authorities. You may be able to dissolve or mix material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber system. Observe all federal, state and local regulations when disposing of the substance. Section 14. TRANSPORT INFORMATION Hazards Class: Does not correspond to the classification standard of the United Nations Butyl Nicotinate Section 14. TRANSPORT INFORMATION UN-No: Not listed Section 15. REGULATORY INFORMATION Safe management ordinance of dangerous chemical product (State Council announces on January 26, 2002 and revised on February 16,2011): Safe use and production, the storage of a dangerous chemical, transport, loading and unloading were prescribed.
Synthesis and structures of 1,2,4-triazoles derivatives
摘要:
A series of novel 1,2,4-triazole derivatives were synthesized, and their structures were characterized by IR, UV-Vis, FL, NMR, ESI-MS, and elemental analysis. In the meanwhile, the single crystal structures of 3,4-diethyl-5-(4-pyridyl)-1,2,4-triazole and 3,4-dimethyl-5-(o-hydroxyphenyl)-1,2,4-triazole were determined by X-ray diffraction.
esterification. Comparing with previously reported homogeneous and heterogeneous catalysts, Zr‐MOF‐808‐P can promote the reaction for a wide range of primary, secondary and tertiary amides with n‐butanol as nucleophilic agent. Different alcohols have been employed in amide esterification with quantitative yields. Moreover, the catalyst acts as a heterogeneous catalyst and could be reused for at least five
Efficient Palladium-Catalyzed Alkoxycarbonylation of <b><i>N</i></b>-Heteroaryl Chlorides - A Practical Synthesis of Building Blocks for Pharmaceuticals and Herbicides
The alkoxycarbonylation of various N-heteroaryl chlorides was examined in detail. Studies of the butoxycarbonylation of 2- and 3-chloropyridine revealed the importance of selecting both the right phosphine ligand and ligand concentration in order to obtain efficient conversion and selectivity. Amongst the different ligands tested, 1,4-bis(diphenylphosphino)butane (dppb) and 1,1′-bis(diphenylphosphino)ferrocene (dppf) led to the most efficient palladium catalyst systems for the conversion of 2- and 4-chloropyridines and similar heteroaryl chlorides. The best catalytic systems for the alkoxycarbonylation of less activated substrates, such as 3-chloropyridines, were found to be those containing 1,4-bis(dicyclohexylphosphino)butane. Good to excellent yields of a number of N-heterocyclic carboxylic acid esters were realized by applying the appropriate ligand in the right concentration at low catalyst loadings (0.005-0.5 mol% Pd). For the first time catalyst turnover numbers (TON) of up to 13,000 were obtained for the carbonylation of a (hetero)aryl chloride.
Carbonylation of Aryl Chlorides with Oxygen Nucleophiles at Atmospheric Pressure. Preparation of Phenyl Esters as Acyl Transfer Agents and the Direct Preparation of Alkyl Esters and Carboxylic Acids
作者:Donald A. Watson、Xuexiang Fan、Stephen L. Buchwald
DOI:10.1021/jo800907e
日期:2008.9.19
A mild, functional group tolerant method of the preparation of phenyl esters from aryl chlorides via palladium-catalyzed carbonylation is described using atmospheric pressure of carbon monoxide. Phenyl esters are shown to be useful acylating agents, delivering libraries of carbonyl derivatives, including alkyl, allyl and thioesters, under very mild conditions. Direct preparation of alkyl esters and
Ir<sup>III</sup>-Catalyzed direct syntheses of amides and esters using nitriles as acid equivalents: a photochemical pathway
作者:Ranadeep Talukdar
DOI:10.1039/d0nj00002g
日期:——
unprecedented IrIII[df(CF3)ppy]2(dtbbpy)PF6-catalyzed simple photochemical process for direct addition of amines and alcohols to the relatively less reactive nitrile triple bond is described herein. Various amides and esters are synthesized as the reaction products, with nitriles being the acid equivalents. A mini-library of different types of amides and esters is made using this mild and efficient process, which
本文描述了空前的Ir III [df(CF 3)ppy] 2(dtbbpy)PF 6催化的简单光化学过程,用于将胺和醇直接加成到反应性较小的腈三键上。合成了各种酰胺和酯作为反应产物,其中腈是酸的当量。使用这种温和有效的方法可以制得不同类型的酰胺和酯的小型文库,该方法在可见光照射下(λ = 445 nm)仅使用1 mol%的光催化剂。该反应策略对于克级合成也是有效的。
Efficient Carbonylation of Aryl and Heteroaryl Bromides using a Palladium/Diadamantylbutylphosphine Catalyst
A general palladium-catalyzed alkoxycarbonylation of aryl and heteroarylbromides has been developed in the presence of bulky monodentate phosphines. Studies of the butoxycarbonylation of three model substrates revealed the advantages of di-1-adamantyl-n-butylphosphine compared to other ligands. In the presence of this catalyst system various bromoarenes provided the corresponding benzoic acid derivatives