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203855-78-1

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203855-78-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 203855-78-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,8,5 and 5 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 203855-78:
(8*2)+(7*0)+(6*3)+(5*8)+(4*5)+(3*5)+(2*7)+(1*8)=131
131 % 10 = 1
So 203855-78-1 is a valid CAS Registry Number.

203855-78-1Relevant articles and documents

Synthesis of Hypervalent Iodine(III) Reagents Containing a Transferable (Diarylmethylene)amino Group and Their Use in the Oxidative Amination of Silyl Ketene Acetals

Kiyokawa, Kensuke,Okumatsu, Daichi,Minakata, Satoshi

, p. 8907 - 8911 (2019/05/28)

The preparation of some hypervalent iodine reagents containing a transferable amino group derived from benzophenone imine derivatives is reported. The reagents can be readily prepared and stored as a bench-stable solid, and were successfully used in the transition-metal-free oxidative amination of silyl ketene acetals to afford the corresponding α-amino esters, the benzophenone imine moieties of which could be easily hydrolyzed, thereby leading to the formation of primary amines.

Polyethylene glycol (PEG) as polymeric support and phase-transfer catalyst in the soluble polymer liquid phase synthesis of α-amino esters

Sauvagnat, Berengere,Lamaty, Frederic,Lazaro, Reneacute,Martinez, Jean

, p. 821 - 824 (2007/10/03)

α-Substituted α-amino esters were synthesized in liquid-phase by polyethylene glycol (PEG) promoted alkylation of a polyethylene glycol-supported Schiff base activated glycine ester.

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