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26910-46-3

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26910-46-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 26910-46-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,6,9,1 and 0 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 26910-46:
(7*2)+(6*6)+(5*9)+(4*1)+(3*0)+(2*4)+(1*6)=113
113 % 10 = 3
So 26910-46-3 is a valid CAS Registry Number.

26910-46-3Relevant articles and documents

Aryl(chloro)methyl 4-tolyl sulfoxides: Synthesis and application to the synthesis of α-aryl ketones

Fukuda, Shigehiko,Tsuji, Kazuhito,Musashi, Jun,Nonaka, Ryo,Kimura, Tsutomu,Satoh, Tsuyoshi

experimental part, p. 3615 - 3626 (2011/12/16)

Aryl(chloro)methyl 4-tolyl sulfoxides were synthesized from arylmethyl 4-tolyl sulfoxides in moderate-to-good yields by sequential treatment with lithium diisopropylamide and tosyl chloride at low temperatures. Treatment of the lithium α-sulfinyl carbanion of the aryl(chloro)methyl 4-tolyl sulfoxides with aldehydes or ketones resulted in the formation of adducts in good-to-high yields. Treatment of these adducts with tert-butylmagnesium chloride gave the corresponding magnesium alkoxides. On treatment with isopropylmagnesium chloride, the alkoxides gave the corresponding magnesium β-oxido carbenoids, which rearranged to give α-aryl ketones in good-to-high yields. The magnesium enolate intermediates generated by rearrangement of the -oxido carbenoids could also be trapped with electrophiles to give α-aryl α-substituted ketones. These procedures offer a good method for the synthesis of a variety of α-aryl ketones from aldehydes and ketones. Georg Thieme Verlag Stuttgart. New York.

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