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24641-27-8

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24641-27-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 24641-27-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,4,6,4 and 1 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 24641-27:
(7*2)+(6*4)+(5*6)+(4*4)+(3*1)+(2*2)+(1*7)=98
98 % 10 = 8
So 24641-27-8 is a valid CAS Registry Number.

24641-27-8Downstream Products

24641-27-8Relevant articles and documents

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Kitaura

, (1949)

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Reductive coupling reactions of 2-nitrochalcones and their β-hydroxy-analogues: New syntheses of 2-arylquinoline and 2-aryl-4-hydroxyquinoline derivatives

Barros, Ana I.R.N.A.,Dias, Andre F. R.,Silva, Artur M. S.

, p. 585 - 594 (2008/02/03)

A one-pot synthesis of novel 2-arylquinolines and 2-aryl-4- hydroxyquinolines was developed from the intramolecular reductive coupling reactions of 2-nitrochalcones and 3-hydroxy-1-phenyl-3-(2-nitrophenyl)-2-propen- 1-ones. Depending on the reduction method and on the presence of electron donating substituents on the A ring of 2-nitrochalcones one can modulate the formation of 2-arylquinolines, their N-oxides, and of 2-aminochalcones. The reduction of 3-hydroxy-1-(2-hydroxyphenyl)-3-(2-nitrophenyl)-2-propen-1-ones with stannous chloride in hydrochloric acid gave 2′-aminoflavones and with ammonium formate and Pd/C yielded 2-(2-hydroxyaryl)-4-hydroxyquinolines. Springer-Verlag 2007.

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