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Updated: May 22, 2026
06:06
Color Spot Test As a Presumptive Tool for the Rapid Detection of Synthetic Cathinones
Published on: February 5, 2018
1-[Bis(4-fluoro-phen-yl)meth-yl]-4-[2-(2-methyl-phen-oxy)eth-yl]piperazine
Abstract:
In the title mol-ecule, C(26)H(28)F(2)N(2)O, the piperazine ring adopts a chair conformation, with the N-bonded substituents in equatorial orientations. The dihedral angle between the fluoro-benzene rings is 69.10 (15).
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01:25Basicity of Heterocyclic Aromatic Amines
Heterocyclic amines, where the N atom is a part of an alicyclic system, are similar in basicity to alkylamines. Interestingly, the heterocyclic amine having a nitrogen atom as part of an aromatic ring has much less basicity than its corresponding alicyclic counterpart. For this reason, as presented in Figure 1, piperidine (pKb = 2.8) is significantly more basic than pyridine (pKb = 8.8).
01:16Adrenergic Agonists: Chemistry and Structure-Activity Relationship
Adrenergic agonists' structure-activity relationship (SAR) determines their selectivity and efficacy. These agonists comprise a phenylethylamine moiety with an aromatic ring and an ethylamine side chain.
Aromatic ring substitutions: Substituting the aromatic ring with –OH groups at positions 3 and 4 yields catecholamines (e.g., epinephrine), which have a high affinity for adrenoceptors. Hydrogen bonding between –OH groups and receptors enhances adrenergic activity.
Separation of the aromatic...
Aromatic ring substitutions: Substituting the aromatic ring with –OH groups at positions 3 and 4 yields catecholamines (e.g., epinephrine), which have a high affinity for adrenoceptors. Hydrogen bonding between –OH groups and receptors enhances adrenergic activity.
Separation of the aromatic...