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1428858-65-4

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1428858-65-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1428858-65-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,8,8,5 and 8 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1428858-65:
(9*1)+(8*4)+(7*2)+(6*8)+(5*8)+(4*5)+(3*8)+(2*6)+(1*5)=204
204 % 10 = 4
So 1428858-65-4 is a valid CAS Registry Number.

1428858-65-4Relevant articles and documents

Copper-Catalyzed Selective ortho-C-H/N-H Annulation of Benzamides with Arynes: Synthesis of Phenanthridinone Alkaloids

Zhang, Ting-Yu,Lin, Jun-Bing,Li, Quan-Zhe,Kang, Jun-Chen,Pan, Jin-Long,Hou, Si-Hua,Chen, Chao,Zhang, Shu-Yu

, p. 1764 - 1767 (2017)

An efficient and convenient copper-catalyzed method has been developed to achieve direct ortho-C-H/N-H annulation to synthesize phenanthridinones with arynes. This method highlights an emerging strategy to transform inert C-H bonds into versatile functional groups in organic synthesis and provides a new way to synthesize phenanthridinone alkaloids efficiently.

Facile Synthesis of Alkylidene Phthalides by Rhodium-Catalyzed Domino C?H Acylation/Annulation of Benzamides with Aliphatic Carboxylic Acids

Liu, Sien,He, Bangyue,Li, Hongyi,Zhang, Xiaofeng,Shang, Yaping,Su, Weiping

, p. 15628 - 15633 (2021/10/05)

The Rh-catalyzed ortho-C(sp2)?H functionalization of 8-aminoquinoline-derived benzamides with aliphatic acyl fluorides generated in situ from the corresponding acids has been developed. This reaction initiated with 8-aminoquinoline-directed ortho-C(sp2)?H acylation, which was accompanied by subsequent intramolecular nucleophilic acyl substitution of amide group to produce alkylidene phthalides This approach exhibits high stereo-selectivity for Z-isomer products, and tolerates a variety of functional groups as well as aliphatic carboxylic acids with diverse structural scaffolds.

Chelation-Assisted Nickel-Catalyzed Oxidative Annulation via Double C-H Activation/Alkyne Insertion Reaction

Misal Castro, Luis C.,Obata, Atsushi,Aihara, Yoshinori,Chatani, Naoto

, p. 1362 - 1367 (2016/01/25)

A nickel/NHC system for regioselective oxidative annulation by double C-H bond activation and concomitant alkyne insertion is described. The catalytic reaction requires a bidentate directing group, such as an 8-aminoquinoline, embedded in the substrate. Various 5,6,7,8-tetrasubstituted-N-(quinolin-8-yl)-1-naphthamides can be prepared as well as phenanthrene and benzo[h]quinoline amide derivatives. Diarylalkynes, dialkylalkynes, and arylalkylalkynes can be used in the system. A Ni0/NiII catalytic cycle is proposed as the main catalytic cycle. The alkyne plays a double role as a two-component coupling partner and as a hydrogen acceptor. In two shakes: Oxidative annulation by a double C-H activation/alkyne insertion reaction was achieved by a nickel/NHC system. A Ni0/NiII catalytic cycle is proposed as the main catalytic cycle. The alkyne plays a double role as a two-component coupling partner and as a hydrogen acceptor.

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