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60883-93-4

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60883-93-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 60883-93-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,0,8,8 and 3 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 60883-93:
(7*6)+(6*0)+(5*8)+(4*8)+(3*3)+(2*9)+(1*3)=144
144 % 10 = 4
So 60883-93-4 is a valid CAS Registry Number.

60883-93-4Relevant articles and documents

Enantioselective Hydroamination of Alkenes with Sulfonamides Enabled by Proton-Coupled Electron Transfer

Demaerel, Joachim,Graff, David E.,Knowles, Robert R.,Roos, Casey B.

, p. 5974 - 5979 (2020)

An enantioselective, radical-based method for the intramolecular hydroamination of alkenes with sulfonamides is reported. These reactions are proposed to proceed via N-centered radicals formed by proton-coupled electron transfer (PCET) activation of sulfonamide N-H bonds. Noncovalent interactions between the neutral sulfonamidyl radical and a chiral phosphoric acid generated in the PCET event are hypothesized to serve as the basis for asymmetric induction in a subsequent C-N bond forming step, achieving selectivities of up to 98:2 er. These results offer further support for the ability of noncovalent interactions to enforce stereoselectivity in reactions of transient and highly reactive open-shell intermediates.

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