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253684-34-3

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253684-34-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 253684-34-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,3,6,8 and 4 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 253684-34:
(8*2)+(7*5)+(6*3)+(5*6)+(4*8)+(3*4)+(2*3)+(1*4)=153
153 % 10 = 3
So 253684-34-3 is a valid CAS Registry Number.

253684-34-3Downstream Products

253684-34-3Relevant articles and documents

A highly selective tandem cross-coupling of gem-dihaloolefins for a modular, efficient synthesis of highly functionalized indoles

Fang, Yuan-Qing,Lautens, Mark

, p. 538 - 549 (2008/09/17)

(Chemical Equation Presented) A highly efficient method of indole synthesis using gem-dihalovinylaniline substrates and an organoboron reagent was developed via a Pd-catalyzed tandem intramolecular amination and an intermolecular Suzuki coupling. Aryl, alkenyl, and alkyl boron reagents are all successfully employed, making for a versatile modular approach. The reaction tolerates a variety of substitution patterns on the aniline leading to indoles with group at C2-C7. The orthogonal approach of the sequential copper- and palladium-mediated synthesis of 1,2-diarylindoles exploited the wide availability of diverse organoboron reagents.

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