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166539-79-3

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166539-79-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 166539-79-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,5,3 and 9 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 166539-79:
(8*1)+(7*6)+(6*6)+(5*5)+(4*3)+(3*9)+(2*7)+(1*9)=173
173 % 10 = 3
So 166539-79-3 is a valid CAS Registry Number.

166539-79-3Relevant articles and documents

Palladium-catalyzed intermolecular alkene carboacylation via ester C-O bond activation

Banovetz, Haley K.,Vickerman, Kevin L.,David, Colton M.,Alkan, Melisa,Stanley, Levi M.

supporting information, p. 3507 - 3512 (2021/05/10)

We report palladium-catalyzed intermolecular carboacylation of alkenes with ester electrophiles and tetraarylborate nucleophiles. Bicyclic alkenes react with a variety of pentafluorophenyl benzoate and alkanoate esters and sodium tetraarylborates to form ketone products in ≤99% yields. These reactions occur in the absence of a directing group and demonstrate esters are competent acyl electrophiles for intermolecular alkene carboacylation reactions.

Aminolysis of aryl ester using tertiary amine as amino donor via c-o and c-n bond activations

Bao, Yong-Sheng,Zhaorigetu, Bao,Agula, Bao,Baiyin, Menghe,Jia, Meilin

, p. 803 - 808 (2014/04/03)

An aminolysis reaction between various aryl esters and inert tertiary amines by C-O and C-N bond activations has been developed for the selective synthesis of a broad scope of tertiary amides under neutral and mild conditions. The mechanism may undergo the two key steps of oxidative addition of acyl C-O bond in parent ester and C-N bond cleavage of tertiary amine via an iminium-type intermediate.

Transesterification for synthesis of carboxylates using aldehydes as acyl donors via C-H and C-O bond activations

Bao, Yong-Sheng,Chen, Chao-Yue,Huang, Zhi-Zhen

, p. 8344 - 8349,6 (2020/10/15)

A new type of transesterification between aryl, heteroaryl, alkyl N-heteroarene-2-carboxylates and various aldehydes by C-H and C-O bond activations has been developed for the synthesis of versatile carboxylates. A possible mechanism containing oxidative addition of acyl-O bond in parent ester and radical cleavage of sp2 C-H bond in aldehyde is proposed.

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