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143959-23-3

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143959-23-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143959-23-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,9,5 and 9 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 143959-23:
(8*1)+(7*4)+(6*3)+(5*9)+(4*5)+(3*9)+(2*2)+(1*3)=153
153 % 10 = 3
So 143959-23-3 is a valid CAS Registry Number.

143959-23-3Downstream Products

143959-23-3Relevant articles and documents

Metal- And solvent-free synthesis of aniline- And phenol-based triarylmethanes: Via Br?nsted acidic ionic liquid catalyzed Friedel-Crafts reaction

Jaratjaroonphong, Jaray,Saeeng, Rungnapha,Senapak, Warapong,Sirion, Uthaiwan,ponpao, nipaphorn

, p. 22692 - 22709 (2021/07/21)

A beneficial, scalable and efficient methodology for the synthesis of aniline-based triarylmethanes has been established through the double Friedel-Crafts reaction of commercial aldehydes and primary, secondary or tertiary anilines using Br?nsted acidic ionic liquid as a powerful catalyst, namely [bsmim][NTf2]. This protocol was successfully performed under metal- and solvent-free conditions with a broad range of substrates, giving the corresponding aniline-based triarylmethane products in good to excellent yields (up to 99%). In addition, alternative aromatic nucleophiles such as phenols and electron-rich arenes were also studied using this useful approach to achieve a diversity of triarylmethane derivatives in high to excellent yields. This journal is

Ruthenium porphyrin catalyzed friedel-crafts type reaction of arenes with imines

Terada, Takuma,Kurahashi, Takuya,Matsubara, Seijiro

, p. 2415 - 2419 (2012/11/13)

Cationic ruthenium porphyrin complex was found to be an efficient catalyst for the Friedel-Crafts type reaction of arenes with imines. The use of a structurally rigid tetradentate porphyrin as the equatorial ligand and weakly coordinating axial ligand is the key to bring out the catalytic reactivity of ruthenium for the reaction.

Friedel-crafts arylation reactions of N -sulfonyl aldimines or sulfonamidesulfones with electron-rich arenes catalyzed by FeCl 3·6H2O: Synthesis of triarylmethanes and bis-heteroarylarylmethanes

Thirupathi, Ponnaboina,Soo Kim, Sung

experimental part, p. 5240 - 5249 (2010/10/03)

(Figure presented) The FeCl3·6H2O-catalyzed Friedel-Crafts arylation reactions of N-sulfonyl aldimines or sulfonamidesulfones with electron-rich arenes and heteroarenes, which lead to the formation of triarylmethanes and bis-heteroar

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