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69257-64-3

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69257-64-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 69257-64-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,2,5 and 7 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 69257-64:
(7*6)+(6*9)+(5*2)+(4*5)+(3*7)+(2*6)+(1*4)=163
163 % 10 = 3
So 69257-64-3 is a valid CAS Registry Number.

69257-64-3Relevant articles and documents

Enantioselective protonation of samarium enolates derived from α- heterosubstituted ketones and lactone by SmI2-mediated reduction

Nakamura, Yutaka,Takeuchi, Seiji,Ohgo, Yoshiaki,Yamaoka, Makoto,Yoshida, Akihiro,Mikami, Koichi

, p. 4595 - 4620 (2007/10/03)

SmI2-mediated reductive cleavage of α-heterosubstituents of α-alkyl or α-aryl ketones and lactone gave the corresponding 'thermodynamic samarium enolates'. Enantioselective protonation of the samarium enolates with C2- symmetric chiral diols afforded the corresponding ketones and lactone in moderate to high enantioselectivities.

Photochemical Reactions of Contact Charge-Transfer Pairs of 1-Arylcyclohexenes and Oxygen

Kojima, Masanobu,Sakuragi, Hirochika,Tokumaru, Katsumi

, p. 3331 - 3336 (2007/10/02)

Photoexcitation of contact charge-transfer (CCT) pairs of 1-arylcyclohexenes 1 (aryl: phenyl, 4-methylphenyl, and 4-methoxyphenyl) and oxygen in acetonitrile and benzene gave 1,2-epoxy-1-arylcyclohexanes 2 as major products together with 2-aryl-2-cyclohexen-1-ols and acetophenones 4.Similar irradiation of the CCT pairs in methanol/acetonitrile afforded mainly 2-aryl 2-cyclohexen-1-ones, and 4.The formation of these products can be explained by photoinduced electron transfer in the excited CCT pairs generating radical cations of 1 and superoxide anions.

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