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79044-20-5

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79044-20-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 79044-20-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,9,0,4 and 4 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 79044-20:
(7*7)+(6*9)+(5*0)+(4*4)+(3*4)+(2*2)+(1*0)=135
135 % 10 = 5
So 79044-20-5 is a valid CAS Registry Number.

79044-20-5Downstream Products

79044-20-5Relevant articles and documents

One-pot synthesis of diarylalkylcarbinols and substituted derivatives through carbon monoxide insertion reactions into aryllithiums

Vitale, Arturo A.,Doctorovich, F.,Nudelman, N. Sbarbati

, p. 9 - 18 (2007/10/02)

The carbonylation of a THF solution of aryllithium (aryl = Ph, o-anisyl) in the presence of an alkyl bromide, RBr; at atmospheric pressure and -78 deg C, affords diarylalkylcarbinols in good yields.Alkyl chlorides do not react under similar experimental conditions.This feature makes the reaction particularly useful for the synthesisof alcohols functionalized in the alkyl chain through subsequent reactions of the diaryl(chloro)alkylcarbinols.The procedure can also be adapted to afford substituted cyclic ethers.If the reaction is carried out in the presence of dibromoalkanes, only one bromine atom reacts, affording diaryl(bromo)alkylcarbinols which are useful intermediates.With secondary and tertiary alkyl bromides diaryl alkyl ethers are obtained in variable yields.

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