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4,4'-(ethane-1,1-diyl)bis(1-bromobenzene), also known as 1,2-bis(4-bromophenyl)ethane or 1,2-di(4-bromophenyl)ethane, is an organic compound with the chemical formula C14H12Br2. It is a white crystalline solid that is used as an intermediate in the synthesis of various chemicals, including flame retardants and pharmaceuticals. 4,4'-(ethane-1,1-diyl)bis(1-bromobenzene) is characterized by its symmetrical structure, with two bromobenzene groups connected by an ethane chain. It is relatively stable and has a melting point of around 90-92°C. Due to the presence of bromine atoms, it can be used in the production of brominated flame retardants, which are important for enhancing the fire resistance of various materials. Additionally, its structural properties make it a valuable building block in the synthesis of complex organic molecules, particularly in the pharmaceutical industry.

5216-51-3

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5216-51-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5216-51-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,2,1 and 6 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 5216-51:
(6*5)+(5*2)+(4*1)+(3*6)+(2*5)+(1*1)=73
73 % 10 = 3
So 5216-51-3 is a valid CAS Registry Number.

5216-51-3Relevant academic research and scientific papers

Cyclohexa-1,3-diene-based dihydrogen and hydrosilane surrogates in B(C6F5)3-catalysed transfer processes

Yuan, Weiming,Orecchia, Patrizio,Oestreich, Martin

, p. 10390 - 10393 (2017)

The cyclohexa-1,3-diene motif is introduced as an equally effective alternative to the cyclohexa-1,4-diene platform in B(C6F5)3-catalysed transfer processes. The transfer hydrogenation of alkenes is realised with α-terpinene and the related transfer hydrosilylation is achieved with 5-trimethylsilyl-substituted cyclohexa-1,3-diene. Both yields and substrate scope are comparable with the prior systems.

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