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172885-53-9

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172885-53-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 172885-53-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,8,8 and 5 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 172885-53:
(8*1)+(7*7)+(6*2)+(5*8)+(4*8)+(3*5)+(2*5)+(1*3)=169
169 % 10 = 9
So 172885-53-9 is a valid CAS Registry Number.

172885-53-9Relevant articles and documents

Copper-Catalyzed Reductive Trifluoromethylation of Alkyl Iodides with Togni's Reagent

Chen, Yanchi,Ma, Guobin,Gong, Hegui

supporting information, p. 4677 - 4680 (2018/08/07)

This work illustrates a reductive cross-electrophile coupling protocol for trifluoromethylation of alkyl iodides under Cu-catalyzed/Ni-promoted reaction conditions. The use of diboron esters as the terminal reductant allows the effective generation of the alkyl-CF3 products with excellent functional group tolerance and broad substrate scope. A mechanism involving a reaction of alkyl-Cu with Togni's reagent was proposed.

Novel cyclic β-aminophosphonate derivatives as efficient organocatalysts for the asymmetric Michael addition reactions of ketones to nitrostyrenes

Widianti, Triana,Hiraga, Yoshikazu,Kojima, Satoshi,Abe, Manabu

experimental part, p. 1861 - 1868 (2010/11/18)

Three novel catalysts based upon cyclic β-aminophosphonate derivatives 13 were designed to catalyze the asymmetric Michael addition reactions of ketones to β-nitrostyrenes. Among the catalysts that have been prepared in this study, cyclic β-aminophosphonic acid monoethylester 3 showed the highest catalytic ability, giving the corresponding Michael adduct in good yields, high enantioselectivities (up to 92%ee), and high diastereoselectivities (syn:anti up to 95:5).

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