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51479-97-1

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51479-97-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 51479-97-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,4,7 and 9 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 51479-97:
(7*5)+(6*1)+(5*4)+(4*7)+(3*9)+(2*9)+(1*7)=141
141 % 10 = 1
So 51479-97-1 is a valid CAS Registry Number.

51479-97-1Relevant articles and documents

Synthesis of pentafluorobenzene-based NHC adducts and their catalytic activity in the microwave-assisted reactions of aldehydes

Papadaki, Evanthia,Magrioti, Victoria

supporting information, (2019/12/24)

N-Heterocyclic carbenes (NHCs) have been widely used in organometallic chemistry as ligands, as well as standalone organocatalysts in various reactions, mostly using aromatic aldehydes as substrates. We have previously demonstrated the efficiency of azolium-2-carboxylate zwitterions in the hydroxymethylation of aldehydes, especially aliphatic aldehydes, under microwave irradiation. In the present work, we report a series of pentafluorobenzene-based NHC adducts and their efficiency in the hydroxymethylation and self-condensation of aliphatic and aromatic aldehydes using microwave irradiation. The free carbenes are released under the reaction conditions and 1,3-dimesityl-2-(perfluorophenyl)imidazolidine and 1,3-bis(2,6-dimethylphenyl)-2-(perfluorophenyl)imidazolidine proved to be the most potent precatalysts.

Synthesis of 1,4-diazabutadienes (=N,N′-ethane-1,2- diylidenebis[amines]) by grinding

He, Jingyu,Xin, Hongxing,Yan, Hong,Song, Xiuqing,Zhong, Rugang

experimental part, p. 159 - 162 (2011/03/16)

A simple and convenient method for the synthesis of 1,4-diazabutadienes (=N,N′-ethane-1,2-diylidenebis[amines]) by grinding glyoxal (=ethanedial) or an α-diketone and anilines (=benzenamines) in the presence of TsOH in a mortar with a pestle is described.

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