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212332-33-7

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212332-33-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 212332-33-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,2,3,3 and 2 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 212332-33:
(8*2)+(7*1)+(6*2)+(5*3)+(4*3)+(3*2)+(2*3)+(1*3)=77
77 % 10 = 7
So 212332-33-7 is a valid CAS Registry Number.

212332-33-7Upstream product

212332-33-7Relevant articles and documents

Bronsted acid-catalyzed intramolecular hydroamination of protected alkenylamines. Synthesis of pyrrolidines and piperidines.

Schlummer, Bjoern,Hartwig, John F

, p. 1471 - 1474 (2007/10/03)

[reaction: see text]. The cyclization of aminoalkenes bearing an electron-withdrawing group on the nitrogen atom was catalyzed by triflic or sulfuric acid in toluene. Pyrrolidines and piperidines were formed in excellent yields. N-phenylanilides also underwent cyclization to form gamma-lactams.

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