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74575-44-3

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74575-44-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74575-44-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,5,7 and 5 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 74575-44:
(7*7)+(6*4)+(5*5)+(4*7)+(3*5)+(2*4)+(1*4)=153
153 % 10 = 3
So 74575-44-3 is a valid CAS Registry Number.

74575-44-3Relevant articles and documents

Ortho-Bromo(propa-1,2-dien-1-yl)arenes: Substrates for domino reactions

Masters, Kye-Simeon,Wallesch, Manuela,Braese, Stefan

, p. 9060 - 9067 (2011/12/03)

o-Bromo(propa-1,2-dien-1-yl)arenes exhibit novel and orthogonal reactivity under Pd catalysis in the presence of secondary amines to form enamines (concerted Pd insertion, intramolecular carbopalladation, and terminative Buchwald-Hartwig coupling) and of amides to form indoles (addition, Buchwald-Hartwig cyclization, and loss of the acetyl group). The substrates for these reactions can be accessed in a reliable and highly selective two-step process from 2-bromoaryl bromides.

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