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3558-65-4

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3558-65-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3558-65-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,5,5 and 8 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 3558-65:
(6*3)+(5*5)+(4*5)+(3*8)+(2*6)+(1*5)=104
104 % 10 = 4
So 3558-65-4 is a valid CAS Registry Number.

3558-65-4Relevant articles and documents

Heteroatom-Embedded Approach to Vinylene-Linked Covalent Organic Frameworks with Isoelectronic Structures for Photoredox Catalysis

Bi, Shuai,Chen, Jie-Sheng,Meng, Fancheng,Wu, Dongqing,Zhang, Fan,Zhang, Zixing

supporting information, (2021/12/23)

Embedding heteroatoms into the main backbones of polymeric materials has become an efficient tool for tailoring their structures and improving their properties. However, owing to comparatively harsh heteroatom-doping conditions, this has rarely been explo

Synthesis of Kr?hnke pyridines through iron-catalyzed oxidative condensation/double alkynylation/amination cascade strategy

Gopalaiah, Kovuru,Choudhary, Renu

supporting information, (2021/09/15)

An efficient protocol for the synthesis of symmetrical and unsymmetrical 2,4,6-trisubstituted pyridines via oxidative cascade annulation of arylacetylenes with benzylamines has been developed. The reaction proceeds smoothly utilizing iron(II) triflate as a catalyst and molecular oxygen as an oxidant with broad substrate scope. Mechanistic studies reveal that the reaction may be experiences an oxidative condensation followed by double alkynylation and amination process.

Regiocontrolled synthesis of 2,4,6-triarylpyridines from methyl ketones, electron-deficient acetylenes and ammonium acetate

Shabalin, Dmitrii A.,Dvorko, Marina Yu.,Schmidt, Elena Yu.,Trofimov, Boris A.

supporting information, p. 2703 - 2715 (2021/04/07)

A novel one-pot two-step approach for the synthesis of 2,4,6-triarylpyridinesvia t-BuOK/DMSO-promotedC-vinylation of a variety of methyl ketones with electron-deficient acetylenes (alkynones) followed by a cyclization of thein situgenerated unsaturated 1,5-dicarbonyl species with ammonium acetate has been developed. This approach possesses competitive advantages such as high regioselectivity, available starting materials and the absence of transition-metal catalysts, oxidants and undesirable byproducts. A wide synthetic utility of the developed approach was demonstrated by the synthesis of trisubstituted, tetrasubstituted and fused pyridines.

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