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1642593-30-3

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1642593-30-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1642593-30-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,4,2,5,9 and 3 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1642593-30:
(9*1)+(8*6)+(7*4)+(6*2)+(5*5)+(4*9)+(3*3)+(2*3)+(1*0)=173
173 % 10 = 3
So 1642593-30-3 is a valid CAS Registry Number.

1642593-30-3Relevant articles and documents

Tandem Cu-catalyzed ketenimine formation and intramolecular nucleophile capture: Synthesis of 1,2-dihydro-2-iminoquinolines from 1-(o-acetamidophenyl) propargyl alcohols

Kumar, Gadi Ranjith,Kumar, Yalla Kiran,Kant, Ruchir,Reddy, Maddi Sridhar

supporting information, p. 1255 - 1260 (2014/06/24)

The copper-catalyzed ketenimine formation reaction of 1-(o-acetamidophenyl) propargyl alcohols with various sulfonyl azides is found to undergo a concomitant intramolecular nucleophile attack to generate 1,2-dihydro-2- iminoquinolines after aromatization (via elimination of acetyl and hydroxy groups) and tautomerization. The reaction produces 4-substituted and 3,4-unsubstituted title compounds in moderate to good yields under mild reaction conditions.

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