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85274-97-1

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85274-97-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 85274-97-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,5,2,7 and 4 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 85274-97:
(7*8)+(6*5)+(5*2)+(4*7)+(3*4)+(2*9)+(1*7)=161
161 % 10 = 1
So 85274-97-1 is a valid CAS Registry Number.

85274-97-1Relevant articles and documents

A Concise Total Synthesis of Dictyodendrins F, H, and i Using Aryl Ynol Ethers as Key Building Blocks

Zhang, Wenhan,Ready, Joseph M.

, p. 10684 - 10692 (2016)

We report a concise total synthesis of dictyodendrin F and the first total syntheses of dictyodendrins H and I in six steps. In these syntheses, aryl ynol ethers were employed as the key building blocks to introduce aryl and heteroaryl rings in the dictyodendrins. This rapid synthesis utilized a novel hetero-[2 + 2]-cycloaddition reaction between two aryl ynol ethers to yield a cyclobutenone ring. The cyclobutenone was sequentially converted into a highly substituted carbazole via a retro-4π/6π-electrocyclization-N-acylation cascade reaction to provide the dictyodendrin core. Consecutive intramolecular oxidative coupling and deprotection gave dictyodendrins F, H, and I.

Solvent- and transition metal-free amide synthesis from phenyl esters and aryl amines

Rzhevskiy, Sergey A.,Ageshina, Alexandra A.,Chesnokov, Gleb A.,Gribanov, Pavel S.,Topchiy, Maxim A.,Nechaev, Mikhail S.,Asachenko, Andrey F.

, p. 1536 - 1540 (2019/01/24)

A general, economical, and environmentally friendly method of amide synthesis from phenyl esters and aryl amines was developed. This new method has significant advantages compared to previously reported palladium-catalyzed approaches. The reaction is performed transition metal- and solvent-free, using a cheap and environmentally benign base, NaH. This approach enabled us to obtain target amides in high yields with high atom economy.

Palladium-catalyzed carbonylation of benzylic ammonium salts to amides and esters: Via C-N bond activation

Yu, Weijie,Yang, Shuwu,Xiong, Fei,Fan, Tianxiang,Feng, Yan,Huang, Yuanyuan,Fu, Junkai,Wang, Tao

, p. 3099 - 3103 (2018/05/22)

An efficient palladium-catalyzed carbonylation reaction of readily available quaternary ammonium salts with CO is reported for the first time to afford arylacetamides and arylacetic acid esters via benzylic C-N bond cleavage. This protocol features mild reaction conditions under atmospheric pressure of CO, a redox-neutral process without an additional oxidant, and a broad substrate scope for various kinds of amines, alcohols and phenols.

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