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1191924-78-3

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1191924-78-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1191924-78-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,9,1,9,2 and 4 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1191924-78:
(9*1)+(8*1)+(7*9)+(6*1)+(5*9)+(4*2)+(3*4)+(2*7)+(1*8)=173
173 % 10 = 3
So 1191924-78-3 is a valid CAS Registry Number.

1191924-78-3Downstream Products

1191924-78-3Relevant articles and documents

A benzannulation protocol to prepare substituted aryl amines using a michael-aldol reaction of β-keto sulfones

Kiren, Sezgin,Padwa, Albert

experimental part, p. 7781 - 7789 (2009/12/30)

(Chemical Equation Presented) A practical benzannulation method to prepare variously substituted aryl amines and sulfides was developed. The approach involves a Michael-aldol reaction of β-keto sulfones with enones followed by a subsequent condensation of the initial adduct with various amines. The base-induced Michaelaldol cascade proceeds smoothly with a number of different β-keto sulfones, affording the adducts as single diastereomers. Heating the resulting Michael-aldol product with an amine in toluene at 120°C results in the formation of a transient enamine, which then undergoes loss of phenyl sulfenic acid to furnish the aromatized amine in good yield. A related reaction also occurred when the Michael-aldol product was heated with thiols or alcohols, giving rise to aryl-substituted sulfides or ethers.

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