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827308-21-4

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827308-21-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 827308-21-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,2,7,3,0 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 827308-21:
(8*8)+(7*2)+(6*7)+(5*3)+(4*0)+(3*8)+(2*2)+(1*1)=164
164 % 10 = 4
So 827308-21-4 is a valid CAS Registry Number.

827308-21-4Relevant articles and documents

Asymmetric strecker synthesis of α-arylglycines

Perez-Fuertes, Yolanda,Taylor, James E.,Tickell, David A.,Mahon, Mary F.,Bull, Steven D.,James, Tony D.

scheme or table, p. 6038 - 6047 (2011/10/08)

A practically simple three-component Strecker reaction for the asymmetric synthesis of enantiopure α-arylglycines has been developed. Addition of a range of aryl-aldehydes to a solution of sodium cyanide and (S)-1-(4- methoxyphenyl)ethylamine affords highly crystalline (S,S)-α-aminonitriles that are easily obtained in diastereomerically pure form. Heating the resultant (S,S)-α-aminonitriles in 6 M aqueous HCl at reflux resulted in cleavage of their chiral auxiliary fragments and concomitant hydrolysis of their nitrile groups to afford enantiopure (S)-α-arylglycines. The enantiopurities of these (S)-α-arylglycines were determined via derivatization of their corresponding methyl esters with 2-formylphenylboronic acid and (S)-BINOL, followed by 1H NMR spectroscopic analysis of the resultant mixtures of diastereomeric iminoboronate esters.

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