239783-48-3

Usage

Uses

Used in Pharmaceutical Industry:
6-Iodo-2-Tetralone is used as a key intermediate in the synthesis of various drugs, contributing to the development of new therapeutic agents.
Used in Medicinal Chemistry:
6-Iodo-2-Tetralone serves as a valuable building block in the design and synthesis of bioactive compounds, facilitating the discovery of novel pharmaceuticals with potential therapeutic applications.
Used in Organic Chemistry Research:
6-Iodo-2-Tetralone is employed as a versatile compound in research, enabling chemists to explore its reactivity and potential applications in the synthesis of complex organic molecules.

InChI:InChI=1/C10H9IO/c11-9-3-1-8-6-10(12)4-2-7(8)5-9/h1,3,5H,2,4,6H2

Upstream product

• 1798-06-7 (4-iodophenyl)acetic acid 
• 74-85-1 ethene 
• 37051-38-0 4-Iodobenzeneacetyl chloride 

Relevant academic research and scientific papers

Electronic effects on enol acidity and keto-enol equilibrium constants for ring-substituted 2-tetralones

Equilibrium constants for the ionization of a variety of phenyl-substituted 2-tetralones (pK(a)(K)), for the ionization of their enols (pK(a)(E)), and for keto-enol tautomerization (PK(E)) were determined. Hammett plots of pK(a)(K) and pK(a)(E) vs. σ are linear with slopes (-ρ) of -1.66 ± 0.06 and -0.90 ± 0.03, respectively, except for deviations of the points corresponding to 6-nitro-2-tetralone (1b) and its enol. We have previously attributed the negative deviation of 1b from the correlation for the acidities of the ketones obtained with the more limited set of data to the lack of a free electron pair on C-1 of the free tetralone (Nevy et al.). The negative deviation of the point for 1b from the correlation for the acidities of the enols suggests that charge transfer from the hydroxyl group of the enol to the nitro group is less important than it is for phenols. This study represents the first systematic study of electronic effects on equilibria among ketone, enol, and enolate in aqueous solution.

Transition state imbalance in proton transfer from phenyl ring-substituted 2-tetralones to acetate ion

Rate constants for the acetate ion-catalyzed ketonization of phenyl-substituted 2-tetralone enols have been determined by stopped-flow UV spectroscopy. From these rate constants and the keto - enol equilibrium constants, the rate constants (k-2) for enolization were calculated. A Bronsted plot of these rate constants (log k-2) vs the acidity of the appropriate 2-tetralone (pKaK) is linear, with a slope ( - αE) of - 0.78 ± 0.03, except for the point corresponding to 6-nitro-2-tetralone (4b). Rate constants for the ionization of 2-tetralone by substituted acetates were determined directly by NMR, giving a corresponding Bronsted βE of 0.54 ± 0.03. Both the negative deviation of the point for 4b from the correlation line for αE and the inequality between αE and βE indicate an imbalanced transition state for the proton abstraction of 2-tetralone by acetate ion. This reaction is impeded by a thermodynamic barrier of 11 kcal/mol, along with an intrinsic kinetic barrier of 14 kcal/mol. A comparison of the transition states for proton abstraction of 2-tetralone by hydroxide ion and by acetate ion shows similar transition state imbalance and intrinsic kinetic barriers for both reactions. The relevance of these results to the mechanism of enzymatic acceleration of enolization is discussed.