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1218795-13-1

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1218795-13-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1218795-13-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,8,7,9 and 5 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1218795-13:
(9*1)+(8*2)+(7*1)+(6*8)+(5*7)+(4*9)+(3*5)+(2*1)+(1*3)=171
171 % 10 = 1
So 1218795-13-1 is a valid CAS Registry Number.

1218795-13-1Relevant articles and documents

N-Picolinamides as ligands for Ullmann-type C-N coupling reactions

Damkaci, Fehmi,Alawaed, Abdulkhaliq,Vik, Erik

supporting information, p. 2197 - 2200 (2016/05/02)

The use of N-phenyl-2-pyridincarboxamide-1-oxide as a ligand with Cu2O in Ullmann type C-N bond formations between aryl halides and N-heteroaryls in common solvents, such as MeCN, DMF, and DMSO at 82-120 °C has been successfully demonstrated. The ligand is effective when only 4% equiv is used relative to the substrate. The reaction provided the corresponding products in coupling of electron-rich, electron poor, and ortho-substituted aryl halides, including ortho aryl-chlorides, in good to very good yields. N-arylation is selectively preferred at the benzyl position when ortho-halide benzyl bromide is reacted with one equivalent of pyrazole. However, di-N-arylation is achieved in very high yields when 2.5 equiv of pyrazole is used, providing a stoichiometric control over the coupling reaction.

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