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40277-63-2

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40277-63-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40277-63-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,2,7 and 7 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 40277-63:
(7*4)+(6*0)+(5*2)+(4*7)+(3*7)+(2*6)+(1*3)=102
102 % 10 = 2
So 40277-63-2 is a valid CAS Registry Number.

40277-63-2Relevant articles and documents

Synthesis of 3 H-1,2,4-Triazol-3-ones via NiCl2-Promoted Cascade Annulation of Hydrazonoyl Chlorides and Sodium Cyanate

Du, Shiying,Yang, Zuguang,Tang, Jianhua,Chen, Zhengkai,Wu, Xiao-Feng

, p. 2359 - 2363 (2021/04/05)

A nickel-promoted cascade annulation reaction for the facile synthesis of 3H-1,2,4-triazol-3-ones from readily available hydrazonoyl chlorides and sodium cyanate has been developed. The transformation occurs through a cascade nickel-promoted intermolecular nucleophilic addition-elimination process, intramolecular nucleophilic addition, and a hydrogen-transfer sequence. The method has been successfully applied for the construction of the core skeleton of the angiotensin II antagonist.

1,3-dipolar cycloaddition reactions of the compound obtaining from cyclopentadiene-PTAD and biological activities of adducts formed selectively

Bayrak, Cetin,Menzek, Abdullah,Taskin-Tok, Tugba,Taslimi, Parham,Yavari, Mirali Akbar

, (2022/01/04)

After known adduct (4) was synthesized by cycloaddition reaction of cyclopentadiene with 4-phenyl-1,2,4-triazoline-3,5-dione, seven new isoxazoline derivatives were synthesized from reactions of 4 with corresponding oximes prepared from benzaldehyde derivatives in the existence of the aqueous NaOCl in CH2Cl2 at 0°C—RT via nitrile oxides. Four new pyrazoline derivatives were also synthesized from reactions of 4 with corresponding prepared reagents via nitrile imines. Selectively, each of all isoxazole and pyrazoline derivatives was synthesized by 1,3-dipolar cycloaddition reactions of compound 4 with the corresponding reagents. Based on the results of their biological activity analyses, Ki values for acetylcholinesterase (AChE), butyrylcholinesterase (BChE), and alpha-glucosidase (α-Gly) enzymes were obtained in this range 32.15 ± 5.73–107.44 ± 19.52 22.57 ± 4.30–186.07 ± 23.51, and 69.08 ± 8.54–528.07 ± 38.46 nM, respectively. Besides that, these compounds were subjected to molecular docking to describe the interaction against AChE, BChE, and α-Gly enzymes in which important interactions were visualized and evaluated with residues of the binding region in each target enzyme.

A formal [3+2] cycloaddition reaction of: N -methylimidazole as a masked hydrogen cyanide: Access to 1,3-disubstitued-1 H -1,2,4-triazoles

Yavari, Issa,Khaledian, Omid

, p. 9150 - 9153 (2020/10/02)

N-Methylimidazole (NMI) can act as a masked HCN in the synthesis of 1,3-disubstitued-1H-1,2,4-triazoles via a formal cycloaddition reaction of hydrazonoyl chloride with NMI. The product was proved to be formed via an initial nucleophilic substitution of hydrazonoyl chloride with NMI following cyclization and two sequential C-N bond cleavages. This journal is

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