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133349-85-6

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133349-85-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133349-85-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,3,4 and 9 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 133349-85:
(8*1)+(7*3)+(6*3)+(5*3)+(4*4)+(3*9)+(2*8)+(1*5)=126
126 % 10 = 6
So 133349-85-6 is a valid CAS Registry Number.

133349-85-6Relevant articles and documents

Synthesis of Structurally Diverse Benzotriazoles via Rapid Diazotization and Intramolecular Cyclization of 1,2-Aryldiamines

Faggyas, Réka J.,Sloan, Nikki L.,Buijs, Ned,Sutherland, Andrew

, p. 5344 - 5353 (2019/05/21)

An operationally simple method has been developed for the preparation of N-unsubstituted benzotriazoles by diazotization and intramolecular cyclization of a wide range of 1,2-aryldiamines under mild conditions, using a polymer-supported nitrite reagent and p-tosic acid. The functional group tolerance of this approach was further demonstrated with effective activation and cyclization of N-alkyl, -aryl, and -acyl ortho-aminoanilines leading to the synthesis of N1-substituted benzotriazoles. The synthetic utility of this one-pot heterocyclization process was exemplified with the preparation of a number of biologically and medicinally important benzotriazole scaffolds, including an α-amino acid analogue.

Reusable ionic liquid-catalyzed oxidative coupling of azoles and benzylic compounds via sp3 C-N bond formation under metal-free conditions

Liu, Wenbo,Liu, Chenjiang,Zhang, Yonghong,Sun, Yadong,Abdukadera, Ablimit,Wang, Bin,Li, He,Ma, Xuecheng,Zhang, Zengpeng

, p. 7154 - 7158 (2015/07/01)

The heterocyclic ionic liquid-catalyzed direct oxidative amination of benzylic sp3 C-H bonds via intermolecular sp3 C-N bond formation for the synthesis of N-alkylated azoles under metal-free conditions is reported for the first time. The catalyst 1-butylpyridinium iodide can be recycled and reused with similar efficacies for at least eight cycles.

Metal-free, highly efficient organocatalytic amination of benzylic C-H bonds

Xue, Qicai,Xie, Jin,Li, Huamin,Cheng, Yixiang,Zhu, Chengjian

supporting information, p. 3700 - 3702 (2013/05/09)

A new synthetic approach toward direct C-N bond formation through sp 3 C-H activation has been developed under metal-free conditions. Both primary and secondary benzylic C-H substrates could react smoothly with various amines to give only mono-amination products with good to excellent yields. The Royal Society of Chemistry 2013.

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