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1142923-31-6

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1142923-31-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1142923-31-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,4,2,9,2 and 3 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1142923-31:
(9*1)+(8*1)+(7*4)+(6*2)+(5*9)+(4*2)+(3*3)+(2*3)+(1*1)=126
126 % 10 = 6
So 1142923-31-6 is a valid CAS Registry Number.

1142923-31-6Downstream Products

1142923-31-6Relevant articles and documents

Highly enantioselective organocatalytic cascade reaction for the synthesis of piperidines and oxazolidines

?íhalová, Sylva,Valero, Guillem,Schimer, Ji?í,Humpl, Marek,Dra?ínsky, Martin,Moyano, Albert,Rios, Ramon,Vesely, Jan

scheme or table, p. 8942 - 8950 (2011/12/01)

The synthesis of piperidines and piperidines derivatives in enantiopure fashion has been a challenging goal for organic chemists. In this report we developed a nice cascade reaction for piperidine derivatives based in an amidomalonate Michael addition to enals followed by an intramolecular hemiaminal formation with good yields and enantioselectivities. Moreover we studied the 'in situ' intramolecular cyclization of this hemiaminals with alcohols forming fused piperidine-oxazolidines.

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