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39179-81-2

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39179-81-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 39179-81-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,1,7 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 39179-81:
(7*3)+(6*9)+(5*1)+(4*7)+(3*9)+(2*8)+(1*1)=152
152 % 10 = 2
So 39179-81-2 is a valid CAS Registry Number.

39179-81-2Relevant articles and documents

Reduction of 2,2-Diaryl-1-nitroethylenes : New Synthesis of 2,2-Diarylacetaldehydes and 1,1,4,4-Tetraarylbuta-1,3-dienes

Tadros, Wadie,Awad, Sami B.,Sakla, Alfy B.,Abdul-Malik, Nadia F.,Armanious, Emili R.

, p. 199 - 202 (2007/10/02)

2,2-Diarylacetaldehydes (VII) have been obtained by selective and controlled reduction of 2,2-diaryl-1-nitroethylenes (IV) in acid medium, and also by acid hydrolysis of 2,2-diarylvinyl-N-acetamides (VI).Nitroalkenes (IV) have been prepared by the reaction of 2,2-diarylethylenes (I) with nitrous acid whereas N-acetamide derivatives (VI) have been obtained by reductive acetylation of the nitro compounds (IV).A number of 1,1,4,4-tetraarylbuta-1,3-dienes (XI) have been obtained by the condensation of 2,2-diarylacetaldehydes (VII) with appropriate 2,2-diarylethylenes (I).Structures of the products have been assigned on the basis of analytical data and chemical and spectral evidences.

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