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1251954-94-5

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1251954-94-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1251954-94-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,1,9,5 and 4 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1251954-94:
(9*1)+(8*2)+(7*5)+(6*1)+(5*9)+(4*5)+(3*4)+(2*9)+(1*4)=165
165 % 10 = 5
So 1251954-94-5 is a valid CAS Registry Number.

1251954-94-5Downstream Products

1251954-94-5Relevant articles and documents

Imination of sulfides and sulfoxides with sulfonylimino- λ3-bromane under mild, metal-free conditions

Ochiai, Masahito,Naito, Masao,Miyamoto, Kazunori,Hayashi, Satoko,Nakanishi, Waro

supporting information; experimental part, p. 8713 - 8718 (2010/10/19)

Exposure of sulfides and sulfoxides to trifluoromethanesulfonylimino(aryl)- λ3-bromane in dichloromethane at 0°C results in a facile transfer of the sulfonylimino group to sulfur atoms and affords N-triflylsulfilimines and -sulfoximines in high yields under transition-metal-free conditions. Imination of (R)-methyl p-tolyl sulfoxide proceeded with predominant retention of configuration at the stereogenic sulfur center. The Hammett plot afforded ρ values of -0.58 for para-substituted thioanisoles and -0.49 for their equivalent sulfoxides, which suggests a buildup of positive charge on the sulfur atoms of sulfides and sulfoxides in the transition state. Calculations suggest a bimolecular nucleophilic-substitution mechanism on the negatively charged nitrogen atom of the sulfonylimino- λ3-bromane, which involves the attack of a sulfide from the opposite side to bromine(III).

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