676243-91-7 Usage
Chemical structure
A benzene ring with two amino groups (-NH2) at the 1 and 2 positions, and two ethynyl groups (-C≡CH) attached to the 4 and 5 positions, each with a trimethylsilyl (-Si(CH3)3) group.
Molecular weight
Approximately 330.60 g/mol
Appearance
Colorless to pale yellow solid or liquid
Solubility
Soluble in organic solvents such as ethanol, acetone, and dichloromethane
Reactivity
High reactivity due to the presence of amino and ethynyl groups, making it useful as a building block in the synthesis of various organic compounds
Applications
a. Synthesis of polymers, pharmaceuticals, and dyes
b. Catalyst in certain chemical reactions
c. Component in electronic devices due to unique electronic and optical properties
Stability
May be sensitive to air, moisture, and heat, requiring proper storage conditions
Hazards
Potential irritant and harmful if inhaled, ingested, or comes into contact with the skin
Safety precautions
Handle with care, use appropriate personal protective equipment (PPE) such as gloves, goggles, and lab coats, and store in a well-sealed container away from heat and light sources
Regulatory status
May be subject to specific regulations and guidelines depending on the intended use and location, such as the Environmental Protection Agency (EPA) or the European Chemicals Agency (ECHA)
Synonyms
1,2-Phenylenediamine, N-(trimethylsilyl)ethynyl-, 4-((trimethylsilyl)ethynyl)-1,2-phenylenediamine, and other variations
Chemical classification
Aromatic amine and alkynylsilane compound
Functional groups
Amino (-NH2), ethynyl (-C≡CH), and trimethylsilyl (-Si(CH3)3) groups
Synthesis
Typically synthesized through the reaction of a suitable benzene dihalide with trimethylsilylacetylene and subsequent amination using a suitable amine source, such as ammonia or primary amines.
Check Digit Verification of cas no
The CAS Registry Mumber 676243-91-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,6,2,4 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 676243-91:
(8*6)+(7*7)+(6*6)+(5*2)+(4*4)+(3*3)+(2*9)+(1*1)=187
187 % 10 = 7
So 676243-91-7 is a valid CAS Registry Number.
676243-91-7Relevant academic research and scientific papers
Spence, John D.,Cline, Eric D.,Llagostera, Domingo M.,O'Toole, Patrick S.
, p. 180 - 181 (2004)
Condensation of a porphyrin-2,3-dione with a 1,2-diaminoarenediyne affords a β-extended porphyrinic-enediyne: upon thermal Bergman cyclization the quinoxaline spacer positioned between the macrocycle and the enediyne prevents tandem radical cyclization to
Spence, John D.,Rios, Andro C.,Frost, Megan A.,McCutcheon, Claire M.,Cox, Christopher D.,Chavez, Sonia,Fernandez, Ramiro,Gherman, Benjamin F.
, p. 10329 - 10339 (2012)
A series of [b]-fused 6,7-diethynylquinoxaline derivatives have been synthesized through an imine condensation strategy to examine the effect of extended benzannelation on the thermal reactivity of enediynes. Absorption and emission spectra of the highly
