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14665-80-6

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14665-80-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 14665-80-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,4,6,6 and 5 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 14665-80:
(7*1)+(6*4)+(5*6)+(4*6)+(3*5)+(2*8)+(1*0)=116
116 % 10 = 6
So 14665-80-6 is a valid CAS Registry Number.

14665-80-6Relevant articles and documents

Preparation method of 3,5-di-tert-butylphenol

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Paragraph 0028-0029; 0032-0034; 0038-0039; 0043-0044; 0048, (2018/09/08)

The invention relates to the field of organic synthesis, in particular to a preparation method of 3,5-di-tert-butylphenol.The method comprises the following steps of (1) adding 1,3-di-tert-butylbenzene and aluminum trichloride into an organic solvent; performing stirring; adding isopropanol and boron trifluoride diethyl etherate complexes; performing heating and stirring; (2) performing liquid separation and organic phase rectification; (3) adding 1,3-di-tert-butyl-5-isopropyl benzene, benzotrifluoride, N-hydroxyphthalimide, azodiisobutyronitrile and sodium carbonate into a reaction bottle; performing heating and stirring; (4) adding dilute sulphuric acid into reaction liquid obtained in the step (3); performing heating stirring, and still standing layering; performing organic phase rectification and drying; then, obtaining a 3,5-di-tert-butylphenol product. The preparation method provided by the invention has the advantages that the reaction conditions are mild; the preparation process is simple; the product yield is high.

Remote steric effects on the disproportionation / recombination ratio of cumyl radicals

Kopecky, Karl R.,Yeung, Mei-Yuk

, p. 374 - 376 (2007/10/02)

The disproportionation / combination ratio in the reaction between two 3,5-di-tert-butylcumyl radicals, generated by thermolysis of the corresponding diazene, is 0.21 +/- 0.03 at 60 deg C in benzene.This is much larger than the value of 0.06 found for the unsubstituted cumyl radicals.It is suggested that the tert-butyl groups hinder the formation of a parallel association complex, which has been proposed to account for the much smaller amount of disproportionation in the reaction between benzylic radicals as compared with alkyl radicals.

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