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197163-72-7

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197163-72-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 197163-72-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,7,1,6 and 3 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 197163-72:
(8*1)+(7*9)+(6*7)+(5*1)+(4*6)+(3*3)+(2*7)+(1*2)=167
167 % 10 = 7
So 197163-72-7 is a valid CAS Registry Number.

197163-72-7Downstream Products

197163-72-7Relevant articles and documents

Synthesis of Quinazolines via an Iron-Catalyzed Oxidative Amination of N-H Ketimines

Chen, Cheng-Yi,He, Fengxian,Tang, Guangrong,Yuan, Huiqing,Li, Ning,Wang, Jinmin,Faessler, Roger

, p. 2395 - 2401 (2018/02/23)

An efficient synthesis of quinazolines based on an iron-catalyzed C(sp3)-H oxidation and intramolecular C-N bond formation using tert-BuOOH as the terminal oxidant is described. The reaction of readily available 2-alkylamino benzonitriles with various organometallic reagents led to 2-alkylamino N-H ketimine species. The FeCl2-catalyzed C(sp3)-H oxidation of the alkyl group employing tert-BuOOH followed by intramolecular C-N bond formation and aromatization afforded a wide variety of 2,4-disubstituted quinazolines in good to excellent yields.

2-subsituted quinazoline preparation method

-

Page/Page column 13, (2016/10/07)

The present invention discloses a 2-subsituted quinazoline preparation method, in particular, 2-subsituted quinazoline is obtained by oxidative decarboxylation and condensation oxidation reaction of o-amino phenyl ketone, an aryl acetic acid and an inorga

General copper-catalyzed coupling of alkyl-, aryl-, and alkynylaluminum reagents with organohalides

Shrestha, Bijay,Thapa, Surendra,Gurung, Santosh K.,Pike, Ryan A. S.,Giri, Ramesh

, p. 787 - 802 (2016/02/18)

We report the first example of a very general Cu-catalyzed cross-coupling of organoaluminum reagents with organohalides. The reactions proceed for the couplings of alkyl-, aryl-, and alkynylaluminum reagents with aryl and heteroaryl halides and vinyl bromides, affording the cross-coupled products in good to excellent yields. Both primary and secondary alkylaluminum reagents can be utilized as organometallic coupling partners. These reactions are not complicated by β-hydride elimination, and as a result rearranged products are not observed with secondary alkylaluminum reagents even for couplings with heteroaryl halides under "ligand-free" conditions. Radical clock experiment with a radical probe and relative reactivity study of Ph3Al with two haloarenes, 1-bromonaphthalene and 4-chlorobenzonitrile, having two different redox potentials indicates that the reaction does not involve free aryl radicals and radical anions as intermediates. These results combined with the result of the Hammett plot obtained by reacting Ph3Al with iodoarenes containing p-H, p-Me, p-F, and p-CF3 substituents, which shows a linear curve (R2 = 0.99) with a ρ value of +1.06, suggest that the current transformation follows an oxidative addition-reductive elimination pathway.

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