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839731-88-3

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839731-88-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 839731-88-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,3,9,7,3 and 1 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 839731-88:
(8*8)+(7*3)+(6*9)+(5*7)+(4*3)+(3*1)+(2*8)+(1*8)=213
213 % 10 = 3
So 839731-88-3 is a valid CAS Registry Number.

839731-88-3Downstream Products

839731-88-3Relevant articles and documents

Access to Chiral Hydropyrimidines through Palladium-Catalyzed Asymmetric Allylic C?H Amination

Wang, Pu-Sheng,Shen, Meng-Lan,Wang, Tian-Ci,Lin, Hua-Chen,Gong, Liu-Zhu

supporting information, p. 16032 - 16036 (2017/11/23)

A palladium-catalyzed asymmetric intramolecular allylic C?H amination controlled by a chiral phosphoramidite ligand was established for the preparation of various substituted chiral hydropyrimidinones, the precursors of hydropyrimidines, in high yields with high enantioselectivities. In particular, dienyl sodium N-sulfonyl amides bearing an arylethene-1-sulfonyl group underwent a sequential allylic C?H amination and intramolecular Diels–Alder (IMDA) reaction to produce chiral fused tricyclic tetrahydropyrimidinone frameworks in high yields and with high levels of stereoselectivity. Significantly, this method was used as the key step in an asymmetric synthesis of letermovir.

A Simple and practical approach to the dibenzo[ c, f ]thiazolo[3,2- a ]azepines: A novel fused tetracyclic azepine system

Palma, Alirio,Galeano, Nelson,Bahsas, Ali

experimental part, p. 1291 - 1302 (2010/07/09)

A novel set of functionalized dibenzo[c,f]thiazolo[3,2-a]azepines, which is a new ring system, were successfully synthesized in a four-step protocol starting from readily available substituted N-allyl-N-benzylanilines. The synthesis of the title compounds

New and efficient synthesis of 6,11-dihydro-11-ethyl-5H-dibenz[b,e]azepine derivatives starting from N-benzylanilines via amino-Claisen and Friedel-Crafts methodologies

Palma, Alirio,Barajas, Jacqueline Jaimes,Kouznetsov, Vladimir V.,Stashenko, Elena,Bahsas, Ali,Amaro-Luis, Juan

, p. 2721 - 2724 (2007/10/03)

New and efficient synthesis of 6,11-dihydro-11-ethyl-5H-dibenz[b,e]azepine derivatives, using the key steps of BF3·OEt 2-catalyzed aromatic amino-Claisen rearrangement and the intramolecular alkene Friedel-Crafts alkylation, is reported.

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