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855288-74-3

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855288-74-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 855288-74-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,5,2,8 and 8 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 855288-74:
(8*8)+(7*5)+(6*5)+(5*2)+(4*8)+(3*8)+(2*7)+(1*4)=213
213 % 10 = 3
So 855288-74-3 is a valid CAS Registry Number.

855288-74-3Downstream Products

855288-74-3Relevant articles and documents

Synthesis of Acyl Terphenyls and Higher Polyaromatics via Base-Promoted C-H Functionalization of Acetylarenes with Arylacetylenes

Schmidt, Elena Yu.,Ivanova, Elena V.,Tatarinova, Inna V.,Ushakov, Igor A.,Semenova, Nadezhda V.,Vashchenko, Alexander V.,Trofimov, Boris A.

, p. 2158 - 2161 (2016)

KOtBu/DMSO-promoted C-H functionalization of acetylarenes with arylacetylenes (100°C, 30 min), generating β,γ-ethylenic ketones, triggers upon further heating (100°C, 4 h, with or without acidifying additive) the cascade assembly of acyl terphenyls and higher polyaromatics in good yields.

Base-catalyzed cascade dimerization of γ-aryl-β,γ-enones into acylated terphenyls

Schmidt, Elena Yu.,Tatarinova, Inna V.,Ushakov, Igor A.,Trofimov, Boris A.

, p. 378 - 379 (2016/10/05)

4-Aryl-1-(het)arylbut-3-en-1-ones dimerize smoothly in the ButOK/DMSO superbase system at 100?°C for 4 h to afford acylated terphenyls in up to 79% yield. The dimerization is accompanied by elimination of the methylarene molecule.

Lewis acid-catalyzed [4 + 2] benzannulation between enynal units and enols or enol ethers: Novel synthetic tools for polysubstituted aromatic compounds including indole and benzofuran derivatives

Asao, Naoki,Aikawa, Haruo

, p. 5249 - 5253 (2007/10/03)

The reaction of enynals 1, including o-(alkynyl)benzaldehydes, and carbonyl compounds 2, such as aldehydes and ketones, in the presence of a catalytic amount of AuBr3 in 1,4-dioxane at 100 °C gave the functionalized aromatic compounds 3 in high yields. Similarly, the AuBr3-catalyzed reactions of 1 with acetal compounds 5 afforded the corresponding aromatic compounds 3 in good yields. On the other hand, when the reaction was carried out in the presence of a catalytic amount of Cu(NTf2)2 and 1 equiv of H2O in (CH2Cl)2 at 100 °C, the decarbonylated naphthalene products 4 were obtained selectively over 3. Benzofused heteroaromatic compounds, such as indole derivatives 13 and benzofuran derivatives 15, were also synthesized by using the present benzannulation methodology.

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