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1213236-33-9

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1213236-33-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1213236-33-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,3,2,3 and 6 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1213236-33:
(9*1)+(8*2)+(7*1)+(6*3)+(5*2)+(4*3)+(3*6)+(2*3)+(1*3)=99
99 % 10 = 9
So 1213236-33-9 is a valid CAS Registry Number.

1213236-33-9Downstream Products

1213236-33-9Relevant articles and documents

Divergent strategy for the chemoselective synthesis of N-Arylbenzimidazoles and N-Arylindazoles from arylamino oximes

Li, Zhen-Hua,Sun, Xiao-Meng,Qin, Jin-Jing,Tan, Zhi-Yong,Wang, Wen-Biao,Ma, Yao

, (2020/01/28)

An efficient and divergent synthesis of N-arylbenzimidazoles and N-arylindazoles from arylamino oximes based on reaction conditions selection was developed. The synthesis was approached by treating oximes with BTC and the chemoselectivity was regulated by the amount of Et3N. This switchable N–N and N–C bond formation process features mild reaction conditions, simple execution, high chemoselectivity and broad substrate scope.

Assembly of N, N -disubstituted hydrazines and 1-aryl-1 H-indazoles via copper-catalyzed coupling reactions

Xiong, Xiaodong,Jiang, Yongwen,Ma, Dawei

supporting information; experimental part, p. 2552 - 2555 (2012/07/13)

CuI-catalyzed coupling of N-acyl-N′-substituted hydrazines with aryl iodides takes place at 60-90 °C to afford N-acyl-N′,N′- disubstituted hydrazines regioselectively and thereby gives a facile method for assembling N,N-diaryl hydrazines. N-Acyl-N′-substituted hydrazines can also react with 2-bromoarylcarbonylic compounds at 60-125 °C under the catalysis of CuI/4-hydroxy-l-proline to provide 1-aryl-1H-indazoles.

METHOD OF SYNTHESIZING 1H-INDAZOLE COMPOUNDS

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Page/Page column 6, (2010/04/23)

A method is provided for synthesizing 1H-indazole compounds in which aromatic carbonyl compounds are reacted with a nitrogen source to form oximes which are then converted to 1H-indazoles.

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