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77825-73-1

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77825-73-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77825-73-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,8,2 and 5 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 77825-73:
(7*7)+(6*7)+(5*8)+(4*2)+(3*5)+(2*7)+(1*3)=171
171 % 10 = 1
So 77825-73-1 is a valid CAS Registry Number.

77825-73-1Relevant articles and documents

Selenosulfonation: Boron Trifluoride Catalyzed or Thermal Addition of Selenosulfonates to Olefins. A Novel Regio- and Stereocontrolled Synthesis of Vinyl Sulfones.

Back, Thomas G.,Collins, Scott

, p. 3249 - 3256 (2007/10/02)

Se-Phenyl areneselenosulfonates 1 add to a variety of olefins to produce β-phenylseleno sulfones 2.The reaction may be performed in the presence of boron trifluoride etherate to produce chiefly or exclusively Markovnikov products arising from a stereospecific anti addition.Alternatively, the addition may be thermally induced to afford anti-Markovnikov products generated by a nonstereospecific free-radical process.The two modes of addition achieve complementary regiospecificity.The β-phenylseleno sulfones are converted in high yield to vinyl sulfones by stereospecific oxidation-elimination with m-chloroperbenzoic acid.

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