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11,12-Dihydrodibenzo[a,e][8]annulen-5(6H)-one is a complex organic chemical compound with the molecular formula C16H12O. It belongs to the class of annulenes, which are cyclic, conjugated hydrocarbons with alternating single and double bonds. This specific compound features a dibenzo[a,e] structure, indicating the presence of two benzene rings fused together with an annulen core. The 11,12-dihydro prefix suggests that there is a double bond between carbons 11 and 12, which has been reduced to a single bond, creating a saturated six-membered ring. The compound has a 6H designation, indicating that it has six hydrogen atoms in a cyclic structure. This molecule is of interest in organic chemistry and may have potential applications in the synthesis of various pharmaceuticals and materials due to its unique structure and properties.

838-15-3

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838-15-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 838-15-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,3 and 8 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 838-15:
(5*8)+(4*3)+(3*8)+(2*1)+(1*5)=83
83 % 10 = 3
So 838-15-3 is a valid CAS Registry Number.

838-15-3Relevant academic research and scientific papers

Organic Reactions Catalyzed by Solid Superacids. 5. Perfluorinated Sulfonic Acid Resin (Nafion-H) Catalyzed Intramolecular Friedel-Crafts Acylation

Yamato, Takehiko,Hideshima, Chieko,Prakash, G. K. Surya,Olah, George A.

, p. 3955 - 3957 (2007/10/02)

Nafion-H, a perfluorinated sulfonic acid resin, catalyzed the intramolecular Friedel-Crafts acylation of diarylalkane-2-carboxylic acids and arylalkanoic acids in refluxing p-xylene to provide cyclic ketones.The reactions were clean, and the water that was formed as a byproduct did not deactivate the catalyst.It was also found that the intramolecular acylation of the corresponding acid chlorides occurred under much milder reaction conditions.The mechanism of the reaction is discussed.

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