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1,3-Cyclononanedione, also known as 1,3-Dioxocyclononane, is a cyclic ketone with the molecular formula C9H14O2. It is a colorless to pale yellow liquid with a molecular weight of 154.21 g/mol. 1,3-Cyclononanedione is characterized by the presence of two carbonyl groups (C=O) at the 1st and 3rd positions of a nine-membered cyclic structure. 1,3-Cyclononanedione is an important intermediate in the synthesis of various organic compounds, particularly in the production of fragrances, pharmaceuticals, and agrochemicals. It is typically synthesized through the oxidation of cyclononanol or by the intramolecular cyclization of nonanedioic acid. Due to its reactive carbonyl groups, 1,3-cyclononanedione can undergo various chemical reactions, such as nucleophilic addition, reduction, and condensation, making it a versatile building block in organic synthesis.

6518-04-3

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6518-04-3 Usage

Type of compound

Cyclic diketone

Structure

Nine-membered ring with two carbonyl groups

Usage

Building block in organic synthesis

Applications

Production of pharmaceuticals, fine chemicals, agrochemicals, and specialty chemicals

Versatility

Can undergo various reactions to form a wide range of products

Role in organic chemistry

Used as a reagent

Additional applications

Production of polymers and resins

Importance

Significant compound in the chemical industry due to its versatile reactivity and wide range of applications

Check Digit Verification of cas no

The CAS Registry Mumber 6518-04-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,5,1 and 8 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 6518-04:
(6*6)+(5*5)+(4*1)+(3*8)+(2*0)+(1*4)=93
93 % 10 = 3
So 6518-04-3 is a valid CAS Registry Number.

6518-04-3Relevant academic research and scientific papers

Ambident Reactivity of Medium-Ring Cycloalkane-1,3-dione Enolates

Thompson, Glenn S.,Hirsch, Jerry A.

, p. 1098 - 1101 (2007/10/03)

Cycloalkane-1,3-diones with ring sizes 7-10 have been converted to their enolates and subjected to a variety of ethylation and methylation reagent/solvent systems. The greatest amount of O-alkylation was encountered using ethyl tosylate in HMPA. The O/C alkylation ratios decreased with almost every reagent/solvent system as the ring size was increased. This trend is consistent with greater steric strain in the conjugated enolate resonance contributor, resulting in diminished O-attack as the ring size is increased.

A FACILE SYNTHESIS OF 1,3-CYCLOALKADIONES

Nishiguchi, Ikuzo,Hirashima, Tsuneaki,Shono, Tatsuya,Sasaki, Manji

, p. 551 - 554 (2007/10/02)

1,3-Cycloalkadiones were prepared by the reaction of 1,2-bis(trimethylsiloxy)cycloalkenes with chloromethyl methyl ether followed by treatment of the resulting 2-hydroxy-2-methoxymethyl cycloalkanones with potassium hydrogen sulfate.The first step of the reactions was effectively catalyzed by active zinc reagents prepared from zinc-copper and alkyl iodides.

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