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905774-57-4

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905774-57-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 905774-57-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,5,7,7 and 4 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 905774-57:
(8*9)+(7*0)+(6*5)+(5*7)+(4*7)+(3*4)+(2*5)+(1*7)=194
194 % 10 = 4
So 905774-57-4 is a valid CAS Registry Number.

905774-57-4Relevant articles and documents

Transition Metal-Free Regioselective Remote C?H Bond 2,2,2-Trifluoroethoxylation of 8-Aminoquinoline Derivatives at the C5 Position

Ruyet, Louise,Poisson, Thomas,Besset, Tatiana

supporting information, p. 3407 - 3410 (2021/06/28)

The regioselective 2,2,2-trifluoroethoxylation at the C5 position of amides derived from the 8-aminoquinoline has been developed. In the presence of PIDA, an unprecedented and undirected transition metal-free transformation was achieved using the readily available and appealing 2,2,2-trifluoroethanol as the fluorinated source. The selective distal 2,2,2-trifluoroethoxylation of an array of amides was achieved in moderate to good yields (12 examples, up to 61 % yield). This approach provided efficient access to high-value added fluorinated quinoline derivatives, key building blocks for bulk and fine chemical industry.

Stereoselective synthesis of diazabicyclic β-lactams through intramolecular amination of unactivated C(sp3)-H bonds of carboxamides by palladium catalysis

Zhang, Shi-Jin,Sun, Wen-Wu,Cao, Pei,Dong, Xiao-Ping,Liu, Ji-Kai,Wu, Bin

, p. 956 - 968 (2016/02/19)

An efficient C(sp3)-H bond activation and intramolecular amination reaction via palladium catalysis at the β-position of carboxyamides to make β-lactams was described. The investigation of the substrate scope showed that the current reaction conditions favored activation of the β-methylene group. Short sequences were developed for preparation of various diazabicyclic β-lactam compounds with this method as the key step from chiral proline and piperidine derivatives.

Cobalt-catalyzed, aminoquinoline-directed C(sp2)-H bond alkenylation by alkynes

Grigorjeva, Liene,Daugulis, Olafs

supporting information, p. 10209 - 10212 (2015/03/31)

A method for cobalt-catalyzed, aminoquinoline- and picolinamide-directed C(sp2)-H bond alkenylation by alkynes was developed. The method shows excellent functional-group tolerance and both internal and terminal alkynes are competent substrates for the coupling. The reaction employs a Co(OAc)2·4 H2O catalyst, Mn(OAc)2 co-catalyst, and oxygen (from air) as a terminal oxidant.

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