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129124-80-7

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129124-80-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129124-80-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,1,2 and 4 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 129124-80:
(8*1)+(7*2)+(6*9)+(5*1)+(4*2)+(3*4)+(2*8)+(1*0)=117
117 % 10 = 7
So 129124-80-7 is a valid CAS Registry Number.

129124-80-7Downstream Products

129124-80-7Relevant articles and documents

Bicyclic Imides with Bridgehead Nitrogen. Synthesis of an Anti-Bredt Bicyclic Hydantoin

Akhtar, M. Shamim,Brouillette, Wayne J.,Waterhous, D. Vincent

, p. 5222 - 5225 (2007/10/02)

The first synthesis of an anti-Bredt bicyclic hydantoin containing an imide bridgehead nitrogen was accomplished.In this procedure 3-bromo-ε-caprolactam (14) was converted to 3-cyano-ε-caprolactam (15).A key reaction was the phenylation of 15 using Ph5Bi to provide 3-cyano-3-phenyl-ε-caprolactam (18), although limitations of this procedure were revealed by unsuccessful efforts with closely related structures.Nitrile 18 was hydrolyzed to the 3-carboxamide 20, which underwent a Hofmann rearrangement in the presence of Pb(OAc)4 and 2,6-lutidine.The rearrangement of 20 was accompanied by intramolecular attack of the lactam nitrogen on the intermediate isocyanate to give the final product, 1,7-diaza-8,9-dioxo-6-phenylbicyclononane (5).Thus 5 was formed from 14 in five steps and an overall yield of 17percent.The structural assignment of 5 was supported by an 15N NMR study.

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