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55246-61-2

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55246-61-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 55246-61-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,2,4 and 6 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 55246-61:
(7*5)+(6*5)+(5*2)+(4*4)+(3*6)+(2*6)+(1*1)=122
122 % 10 = 2
So 55246-61-2 is a valid CAS Registry Number.

55246-61-2Downstream Products

55246-61-2Relevant articles and documents

Synthesis of β-Lactams by Palladium(0)-Catalyzed C(sp3)?H Carbamoylation

Dailler, David,Rocaboy, Ronan,Baudoin, Olivier

supporting information, p. 7218 - 7222 (2017/06/13)

A general and user-friendly synthesis of β-lactams is reported that makes use of Pd0-catalyzed carbamoylation of C(sp3)?H bonds, and operates under stoichiometric carbon monoxide in a two-chamber reactor. This reaction is compatible with a range of primary, secondary and activated tertiary C?H bonds, in contrast to previous methods based on C(sp3)?H activation. In addition, the feasibility of an enantioselective version using a chiral phosphonite ligand is demonstrated. Finally, this method can be employed to synthesize valuable enantiopure free β-lactams and β-amino acids.

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