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55212-82-3

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55212-82-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 55212-82-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,2,1 and 2 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 55212-82:
(7*5)+(6*5)+(5*2)+(4*1)+(3*2)+(2*8)+(1*2)=103
103 % 10 = 3
So 55212-82-3 is a valid CAS Registry Number.

55212-82-3Relevant articles and documents

Condensation reactions of 1.1-dimorpholinoethene and of 1,1-dipiperidinoethene with carbon acids

Gandhi, Sham S.,Gibson, Martin S.

, p. 2717 - 2721 (2007/10/02)

1,1-Dimorpholinoethene and 1,1-dipiperidinoethene condense with such compounds as malonitrile, ethyl cyanoacetate, cyanoacetamide, and diethyl malonate to give the corresponding β,β-disubstituted enamine, a molecule of morpholine or piperidine being eliminated in the process.Similar reactions with acetylacetone and ethyl acetoacetate proceed with loss of the acetyl group to give the β-enamine. 1,1-Dipiperidinoethene and nitromethane give the β-nitroenamine.Secondary process of either hydrolysis or further Michael addition and elimination are noted in condensations of 1,1-dimorpholinoethene or 1,1-dipiperidinoethene with cyanoacetamide under more basic conditions. 1,1-Dipiperidinoethene is arylated at the 2-position by 2,4-dinitrochlorobenzene.

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