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5825-43-4

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5825-43-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5825-43-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,8,2 and 5 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 5825-43:
(6*5)+(5*8)+(4*2)+(3*5)+(2*4)+(1*3)=104
104 % 10 = 4
So 5825-43-4 is a valid CAS Registry Number.

5825-43-4Downstream Products

5825-43-4Relevant articles and documents

Iridium/Acid Cocatalyzed Direct Access to Fused Indoles via Transfer Hydrogenative Annulation of Quinolines and 1,2-Diketones

Jiang, Huanfeng,Lu, Guangpeng,Xie, Feng,Xie, Rong,Zhang, Min

, p. 2308 - 2312 (2020)

Herein, we present an unprecedented iridium/acid cocatalyzed construction of fused indoles via transfer hydrogenative annulation of nonactivated quinolines and 1,2-diketones. The products are assembled via initial reduction followed by selective coupling

Metal and Oxidant Free Construction of Substituted- and/or Polycyclic Indoles: A Useful Alternative to Bischler and Related Syntheses

De Crescentini, Lucia,Favi, Gianfranco,Mantellini, Fabio,Mari, Giacomo,Santeusanio, Stefania

supporting information, (2020/08/27)

A wide range of substituted indoles or polycyclic derivatives containing the indole core are easily accessible by acidic treatment of aromatic amines and 1,2-diaza-1,3-dienes. Unlike the related indole-Bischler synthesis, the regioselectivity of the method here reported is unique and predictable, the yields are generally good and also electron withdrawing substituted indoles are smoothly recovered.

Addition Reactions of Heterocyclic Compounds. Part 77. Reaction of Dimethyl Acetylenedicarboxylate with 2- and 3-Alkyl Substituted Indoles and the Formation of (1+1 DMAD-CH4O) Adducts

Letcher, Roy M.,Choi, Michael C. K.,Acheson, R. Morrin,Prince, Richard J.

, p. 501 - 504 (2007/10/02)

Dimethyl acetylenedicarboxylate (DMAD) adds to 1,3-dimethylindole in moist acetic acid to give 2-substituted adducts.The dienone formulation for a product from 1,2,3-trimethylindole and DMAD has been confirmed by making use of proton-coupled 13C n.m.r. spectra.The generality of the formation of this (1+1 DMAD-CH4O) adduct is shown by the preparation of a further five new dienones including two bicyclopentadecadienones.

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