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70298-83-8

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70298-83-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 70298-83-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,2,9 and 8 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 70298-83:
(7*7)+(6*0)+(5*2)+(4*9)+(3*8)+(2*8)+(1*3)=138
138 % 10 = 8
So 70298-83-8 is a valid CAS Registry Number.

70298-83-8Relevant articles and documents

Equivalent Loading of Directed Arenes in Pd(II)-Catalyzed Oxidative Cross-Coupling of Aryl C-H Bonds at Room Temperature

Mei, Chong,Zhao, Mengdi,Lu, Wenjun

, p. 2714 - 2733 (2021/02/01)

The unsymmetrical biaryls (Ar1-Ar2) produced by the catalytic cross-couplings of aryl halides (Ar1-halo) with aryl metallics (Ar2-M) in the loading ratio of 1:1 are popular in chemical synthesis. In contrast, there has been less precedence on the same biaryls produced effectively from two normal aryl C-H bonds with equivalent loading. Here, we report that, in a palladium/oxidant/acid catalytic system at room temperature, one arene (Ar1-H, 1 equiv) can highly selectively couple with the other one (Ar2-H, 1 equiv) to afford the target Ar1-Ar2 just by controlling the directing groups and the substituted groups on their phenyl rings. The utility of this one-one cross-coupling is also demonstrated by synthesis of a few bioactive molecules.

Rhodium(III)-catalysed, redox-neutral C(sp2)-H alkenylation using pivalimide as a directing group with internal alkynes

Kathiravan, Subban,Nicholls, Ian A.

supporting information, p. 1 - 4 (2016/12/23)

In the presence of [RhCp?Cl2]2, N-pivaloyl anilines react with internal alkynes to give the corresponding 2-alkenylpivalimides under redox neutral conditions through C-H activation. This redox neutral hydroarylation, which does not require an external organic acid, unlocks a regioselective synthetic route to 2-alkenyl anilines and is generally applicable to diversely substituted electron rich and electron poor pivalimides.

A highly efficient Pd-catalyzed decarboxylative ortho-arylation of amides with aryl acylperoxides

Li, Dengke,Xu, Ning,Zhang, Yicheng,Wang, Lei

supporting information, p. 14862 - 14865 (2014/12/11)

An efficient Pd-catalyzed decarboxylative ortho-arylation of amides with aryl acylperoxides was developed. A variety of anilides reacted with aryl acylperoxides to afford the corresponding ortho-arylation products, and N-methoxyarylamides generated phenanthridinones. This journal is

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