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Cyclopentanone, 2-(1-phenylethylidene)-, (E)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

139080-12-9

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139080-12-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139080-12-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,0,8 and 0 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 139080-12:
(8*1)+(7*3)+(6*9)+(5*0)+(4*8)+(3*0)+(2*1)+(1*2)=119
119 % 10 = 9
So 139080-12-9 is a valid CAS Registry Number.

139080-12-9Relevant academic research and scientific papers

Carbocyclization of unsaturated thioesters under palladium catalysis

Thottumkara, Arun P.,Kurokawa, Toshiki,Du Bois

, p. 2686 - 2689 (2013/07/11)

An intramolecular thioester-olefin cross-coupling reaction for the preparation of cyclic ketone structures from unsaturated thioesters is described. This method capitalizes on the unique reactivity of thioesters with low-valent palladium catalysts and copper(i) salts to form acyl-metal species. Trapping of such intermediates with alkene functional groups generates the corresponding exo-methylene cycloalkanone products. Unsaturated thioester substrates, which can be accessed using a suite of modern synthetic methods, can now be regarded as precursors to complex carbocyclic derivatives.

The Reaction of 2-Substituted Cycloalkanones with Aldehydes under Acidic Conditions

Sato, Tadashi,Hayase, Kengo

, p. 3384 - 3389 (2007/10/02)

The title reaction proceeded with either ring enlargement or bicyclic compound formation, as well as the aldol reaction, depending upon the types of the reactants and reaction conditions.

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