21872-70-8 Usage
General Description
2,4-Dichlorobenzenediazonium tetrafluoroborate is a chemical compound with the formula C6H3Cl2BF4N2. As an organohalogen compound, it has two chlorine atoms substituted in the benzene ring. It is typically used in organic chemistry as a diazonium salt. Diazonium salts are generally useful in reactions that result in the substitution of new groups into molecules for the creation of a wide variety of complex organic compounds. Typically, this compound is stored under special conditions to prevent it from decomposing, since it can become unstable and potentially explode under certain conditions. As a result, it is handled with care to ensure safe usage.
Check Digit Verification of cas no
The CAS Registry Mumber 21872-70-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,8,7 and 2 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 21872-70:
(7*2)+(6*1)+(5*8)+(4*7)+(3*2)+(2*7)+(1*0)=108
108 % 10 = 8
So 21872-70-8 is a valid CAS Registry Number.
InChI:InChI=1/C6H3Cl2N2.BF4/c7-4-1-2-6(10-9)5(8)3-4;2-1(3,4)5/h1-3H;/q+1;-1
21872-70-8Relevant articles and documents
Copper-mediated tandem ring-opening/cyclization reactions of cyclopropanols with aryldiazonium salts: Synthesis of: N -arylpyrazoles
Liu, Jidan,Xu, Erjie,Jiang, Jinyuan,Huang, Zeng,Zheng, Liyao,Liu, Zhao-Qing
supporting information, p. 2202 - 2205 (2020/02/26)
A general method for the synthesis of structurally diverse N-arylpyrazoles from readily available cyclopropanols and aryldiazonium salts is disclosed. The reaction was conducted at room temperature within minutes with a broad substrate scope and excellent regioselectivity.
