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81654-64-0

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81654-64-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81654-64-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,5 and 4 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 81654-64:
(7*8)+(6*1)+(5*6)+(4*5)+(3*4)+(2*6)+(1*4)=140
140 % 10 = 0
So 81654-64-0 is a valid CAS Registry Number.

81654-64-0Relevant articles and documents

Traceless selenocarboxylates for the one-pot synthesis of amides and derivatives

Silva, Luana,Rosário, Alisson R.,Machado, Bianca M.,Lüdtke, Diogo S.

supporting information, (2020/12/25)

We have recently reported a one-pot procedure for glycosyl amides synthesis using selenocarboxylate as traceless reagent. Herein, we present a further application of selenocarboxylate-azide reaction for amide bond formation on a broader range of substrates, including heterocyclic systems and fatty acid. This method proved to be highly efficient for the synthesis of primary and secondary amides, sulfonamides, imides, phosphoramide and also carbamate.

Palladium-catalyzed intramolecular C-H arylation of 2-halo-: N -Boc- N -arylbenzamides for the synthesis of N-H phenanthridinones

Hu, Quan-Fang,Gao, Tian-Tao,Shi, Yao-Jie,Lei, Qian,Yu, Luo-Ting

, p. 13879 - 13890 (2018/04/25)

A palladium catalyzed synthesis of N-H phenanthridinones was developed via C-H arylation. The protocol gives phenanthridinones regioselectively by one-pot reaction without deprotection. It exhibits broad substrate scope and affords targets in up to 95% yields. Importantly, it could be applied for the less reactive o-chlorobenzamides.

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