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167391-18-6

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167391-18-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 167391-18-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,7,3,9 and 1 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 167391-18:
(8*1)+(7*6)+(6*7)+(5*3)+(4*9)+(3*1)+(2*1)+(1*8)=156
156 % 10 = 6
So 167391-18-6 is a valid CAS Registry Number.

167391-18-6Downstream Products

167391-18-6Relevant articles and documents

Synthesis of optically active 1,3-dioxin-4-one derivatives having a hydroxymethyl group at the 2-position and their use for regio-, diastereo-, and enantioselective synthesis of substituted cyclobutanols

Murakami, Masayuki,Kamaya, Hiroshi,Kaneko, Chikara,Sato, Masayuki

, p. 201 - 215 (2007/10/03)

A new method for preparing optically active 1,3-dioxin-4-one derivatives is presented. A series of prochiral 2,2-bis(hydroxymethyl)-1,3-dioxin-4-ones was synthesized by [4+2]cycloaddition of acylketene to protected 1,3-dihydroxy-2-propanone derivatives followed by deprotection of the hydroxyl groups. Desymmetrization of the prochiral dioxinones by lipase-catalyzed monoacetylation afforded optically active 2-(hydroxymethyl)dioxinones. Intramolecular photo[2+2]cycloaddition of ω-alkenyl esters of these alcohols provided an efficient method for regio-, diastereo-, and enantioselective synthesis of cyclobutanols.

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