Cas 1057655-08-9,3-hydroxy-5,5-dimethyl-2-(3-oxo-1-phenyl-3-(pyridin-2-yl)-propyl)-cyclohex-2-enone

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Check Digit Verification of cas no

The CAS Registry Mumber 1057655-08-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,5,7,6,5 and 5 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1057655-08:
(9*1)+(8*0)+(7*5)+(6*7)+(5*6)+(4*5)+(3*5)+(2*0)+(1*8)=159
159 % 10 = 9
So 1057655-08-9 is a valid CAS Registry Number.

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1057655-08-9Relevant academic research and scientific papers

Unexpected solvent-free cycloadditions of 1,3-cyclohexanediones to 1-(pyridin-2-yl)-enones mediated by manganese(III) acetate in a ball mill

Wang, Guan-Wu,Dong, Ya-Wei,Wu, Ping,Yuan, Ting-Ting,Shen, Ye-Bing

, p. 7088 - 7095 (2008)

(Chemical Equation Presented) Under solvent-free ball-milling conditions, manganese(III) acetate dihydrate-mediated cycloadditions of 5,5-dimethyl-1,3- cyclohexanedione and 1,3-cyclohexanedione to various 1-(pyridin-2-yl)-enones proceeded efficiently to afford trans-2-acyl-3-aryl/alkyl-2,3,6,7-tetrahydro- 4(5H)-benzofuranone derivatives. The cyclization reactions exhibited good to excellent yields, as well as extremely high diastereoselectivity and unexpected regioselectivity. Manganese(III) acetate behaved both as an oxidant and as a Lewis acid.

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