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1-(2',4',6'-tri-tert-butylphenyl)acetylene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

31039-85-7

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31039-85-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31039-85-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,0,3 and 9 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 31039-85:
(7*3)+(6*1)+(5*0)+(4*3)+(3*9)+(2*8)+(1*5)=87
87 % 10 = 7
So 31039-85-7 is a valid CAS Registry Number.

31039-85-7Relevant academic research and scientific papers

Highly syn selective addition of aqueous HBr to hydrophobically shielded arylalkynes

Knorr, Rudolf,Rossmann, Eva C.,Knittl, Monika,B?hrer, Petra

, p. 5332 - 5338 (2014/07/08)

Hydrophobically shielded alkynes HC≡C-aryl, carrying 2,6-di- and 2,4,6-tri-tert-butylphenyl as the aryl group, can add aqueous HBr on heating in moist chloroform solutions to produce pure H2C=C(-Br)-aryl (isolated yields 96%, no hydrolysis). Em

Highly syn selective addition of aqueous HBr to hydrophobically shielded arylalkynes

Knorr, Rudolf,Rossmann, Eva C.,Knittl, Monika,B?hrer, Petra

, p. 5332 - 5338 (2014/12/10)

Hydrophobically shielded alkynes HCC-aryl, carrying 2,6-di- and 2,4,6-tri-tert-butylphenyl as the aryl group, can add aqueous HBr on heating in moist chloroform solutions to produce pure H2CC(-Br)-aryl (isolated yields 96%, no hydrolysis). Employment of DCC-aryl furnished initially only the E stereoisomer of DHCC(-Br)-aryl (stereospecific syn addition), which was slowly both dedeuteriated and partially transformed to the Z stereoisomer by HBr. The strongly retarded HBr addition to H3C-CC-aryl in moist chloroform produced again more E than Z product, whereas a thermodynamic E/Z ratio of 10:87 was found in moist acetic acid. Substitution of Br by LiSnMe3produced H2CC(-SnMe3)-aryl with well resolved long range 119Sn NMR coupling constants.

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