Material Safety Data Sheet Section 1. Identification of the substance Product Name: (1H-Pyrrol-2-yl)-acetic acid Synonyms: Section 2. Hazards identification Harmful by inhalation, in contact with skin, and if swallowed. Section 3. Composition/information on ingredients. Ingredient name: (1H-Pyrrol-2-yl)-acetic acid CAS number: 79673-53-3 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. Storage: Store in closed vessels, refrigerated. 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 Melting point: No data Flash point: No data Density: No data Molecular formula: C6H7NO2 Molecular weight: 125.1 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.
Transition Metal-Free sp<sup>3</sup>
C-H Functionalization of Arylacetic Acids for the Synthesis of 1,3,5-Triazines
作者:Sachin D. Pardeshi、Pratima A. Sathe、Balu V. Pawar、Kamlesh S. Vadagaonkar、Atul C. Chaskar
DOI:10.1002/ejoc.201800178
日期:2018.5.15
An efficient transition metal‐free protocol for the synthesis of 1,3,5‐trisubstituted triazines has been developed through C–Hfunctionalization of arylacetic acids by using K2CO3 as a base, followed by condensation with substituted benzamidine hydrochloride.
通过使用K 2 CO 3为碱,通过芳基酸的C–H官能化,然后与取代的苯甲idine盐酸盐缩合,已开发出一种高效的无过渡金属合成1,3,5-三取代的三嗪的方案。
Silver(I)- or Copper(II)-Mediated Dearomatization of Aromatic Ynones: Direct Access to Spirocyclic Scaffolds
作者:Michael J. James、James D. Cuthbertson、Peter O'Brien、Richard J. K. Taylor、William P. Unsworth
DOI:10.1002/anie.201501812
日期:2015.6.22
A high‐yielding silver(I)‐ or copper(II)‐catalyzed dearomatizing spirocyclization strategy allows the conversion of simple aromatic compounds that contain ynone substituents, including indole, anisole, pyrrole, and benzofuran derivatives, into functionalized spirocyclic scaffolds. A high‐yielding asymmetric variant furnishes spirocyclic indolenines in up to 89:11 e.r.
<scp>Fe‐Catalyzed Pictet‐Spengler‐Type</scp>
Cyclization
<i>via</i>
Selective
<scp>Four‐Electron</scp>
Reductive Functionalization of
<scp>
CO
<sub>2</sub>
</scp>
作者:Wen‐Duo Li、Jie Chen、Dao‐Yong Zhu、Ji‐Bao Xia
DOI:10.1002/cjoc.202000521
日期:2021.3
describe a novel catalytic Pictet‐Spengler‐type cyclization using CO2 as a nontoxic and sustainable C1 feedstock with environmentally benign and non‐precious‐metal iron as catalyst. The reaction is achieved by selective four‐electron reduction of CO2 into methylene level intermediate through carefully tuning the reaction parameters. A variety of tetrahydro‐β‐carbolines and other nitrogen‐containing
The present invention provides an azolylacylquanidine compound of formula I
The present invention also provides methods for the use thereof to inhibit β-secretase (BACE) and treat β-amyloid deposits and neurofibrillary tangles.