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249894-62-0

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249894-62-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 249894-62-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,9,8,9 and 4 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 249894-62:
(8*2)+(7*4)+(6*9)+(5*8)+(4*9)+(3*4)+(2*6)+(1*2)=200
200 % 10 = 0
So 249894-62-0 is a valid CAS Registry Number.

249894-62-0Relevant articles and documents

Selectivity in Lewis acid-mediated fragmentations of peroxides and ozonides: Application to the synthesis of alkenes, homoallyl ethers, and 1,2-dioxolanes

Dussault, Patrick H.,Lee, Hyung-Jae,Liu, Xuejun

, p. 3006 - 3013 (2007/10/03)

Fragmentation of dialkyl peroxides and ozonides is strongly influenced by the choice of Lewis acid. TiCl4 promotes C-O ionization (SN1 reaction) of tertiary peroxides while SnCl4 and BF3·OEt2 promote O-O heterolysis (Hock reaction). The cationic intermediates are trapped with allyltrimethylsilane to afford allylated alkanes and homoallyl ethers. In the absence of a nucleophile, ozonides (1,2,4-trioxolanes) invariably undergo O-O heterolysis. However, the combination of allyltrimethylsilane and SnCl4 results in formation of 1,2-dioxolanes via trapping of intermediates derived from SN1 ionization.

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