Try the merck index as this lists all chemicals with alternative names and a brief summary of properties. I believe it is available for free online
The symbol of Aryl group is "Ar".
Depending on the desired definition of the word "contaminant" Alkyl Benzene Sulfonate is more likely the answer. Linear Alkyl Sulfonates are far more readily biodegraded than Alkyl Benzene Sulfonate due to their relative chemical structures. Alkyl Benzene Sulfonate can cause issues in waterways such as eutrophication, which in turn can lead to algal blooms.
Another name for sodium polystyrene sulfonate is Kayexalate.
The chemical formula of sodium dodecylbenzene sulfonate is C18H29NaO3S.
An arylation is a reaction which involves the addition of one or more aryl groups.
Sodium polystyrene sulfonate
The SN2 pathway is disfavored with aryl halides due to the steric hindrance and the resonance stabilization of the aryl ring. Aryl halides have a planar structure that makes it difficult for the nucleophile to approach the carbon atom bonded to the halide, hindering the backside attack necessary for the SN2 mechanism. Additionally, the resonance of the aryl ring can delocalize the negative charge that would form during the transition state, making the reaction less favorable. Therefore, aryl halides typically undergo alternative mechanisms, such as nucleophilic aromatic substitution (SNAr).
Due to the bulky nature of the aryl group, aryl halides do not undergo SN reactions easily. Additionally, the carbon-halogen bond in aryl halides is strengthened due to resonance stabilization, making it more difficult for nucleophiles to displace the halogen atom. This results in aryl halides being more prone to undergo elimination reactions (E1 and E2) instead of substitution reactions.
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The Sandmeyer reaction is a chemical reaction used to synthesize aryl halides from aryl diazonium salts. It is named after the Swiss chemist Traugott Sandmeyer. An aromatic (or heterocyclic) amine quickly reacts with a nitrite to form an aryl diazonium salt, which decomposes in the presence of copper(I) salts, such as copper(I) chloride, to form the desired aryl halide. The reaction is a radical-nucleophilic aromatic substitution.
The chemical formula of Sodium decyl sulfonate is C10H21NaO3S. It consists of carbon, hydrogen, sodium, oxygen, and sulfur atoms.
An arylidene is an aryl derivative of a methylene group.