Cas 451492-33-4,methyl N-(2-propynyl)-R-phenylglycinate

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Check Digit Verification of cas no

The CAS Registry Mumber 451492-33-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,5,1,4,9 and 2 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 451492-33:
(8*4)+(7*5)+(6*1)+(5*4)+(4*9)+(3*2)+(2*3)+(1*3)=144
144 % 10 = 4
So 451492-33-4 is a valid CAS Registry Number.

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451492-33-4Relevant academic research and scientific papers

Kinetic acidity of iminium ions. 2-Alkynyl- and 2,5-dialkynyl-pyrrolidines via the iminium ion route to azomethine ylides

Grigg, Ronald,Sridharan, Visuvanathar,Thornton-Pett, Mark,Wang, Jun,Xu, Juan,Zhang, Jin

, p. 2627 - 2640 (2002)

Condensation of carboxaldehydes with appropriate secondary propargylamines furnishes iminium ions which undergo regioselective deprotonation at the propargylic methylene group to generate azomethine ylides. Interception of the latter by N-methyl or N-phenyl maleimide furnishes 2- and 2,5-dialkynyl-pyrrolidines.

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