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1332531-41-5

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1332531-41-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1332531-41-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,2,5,3 and 1 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1332531-41:
(9*1)+(8*3)+(7*3)+(6*2)+(5*5)+(4*3)+(3*1)+(2*4)+(1*1)=115
115 % 10 = 5
So 1332531-41-5 is a valid CAS Registry Number.

1332531-41-5Upstream product

1332531-41-5Downstream Products

1332531-41-5Relevant articles and documents

Preparation of α-acetonylpiperidines from α-allylated heterocycles by a bromocyclocarbamation reaction

Kuznetsov, Nikolai Yu.,Khrustalev, Victor N.,Godovikov, Ivan A.,Bubnov, Yuri N.

, p. 2015 - 2021 (2007)

2,6-Disubstituted (alkyl)(allyl)- and diallylpiperidines containing C=C bonds in different environments can be selectively transformed into α-acetonylpiperidines, including the alkaloid (±)-6-epipinidinone. The key step is the bromocyclocarbamation reaction of the N-Boc-protected α-allylheterocycle with N-bromosuccinimide. The bulky tert-butyl group on the piperidine ring can affect the diastereoselectivity of the cyclization by 1,5-asymmetric induction. The structure of one of the isolated diastereomers was established by X-ray single-crystal diffraction. The prepared bicyclic bromides were readily dehydrobrominated with tBuOK and the corresponding enols were hydrolyzed to α-acetonylpiperidine hydrochlorides. The method presented is convenient and simple to perform. Wiley-VCH Verlag GmbH & Co. KGaA, 2007.

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