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4-[(2-naphthylmethylene)amino]phenol, also known as 4-[(2-naphthalenyl)methylidene]phenol, is an organic compound with the chemical formula C17H13NO. It is a derivative of phenol, featuring a naphthalene ring attached to the phenol molecule through a methylene bridge. 4-[(2-naphthylmethylene)amino]phenol is characterized by its yellow crystalline appearance and is soluble in organic solvents. It is primarily used in the synthesis of dyes and pigments, particularly in the production of azo dyes, which are known for their vibrant colors and are used in various industries such as textiles, plastics, and printing inks. The compound's chemical structure endows it with specific properties that make it suitable for these applications, including its ability to form stable color complexes.

3525-50-6

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3525-50-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3525-50-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,5,2 and 5 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 3525-50:
(6*3)+(5*5)+(4*2)+(3*5)+(2*5)+(1*0)=76
76 % 10 = 6
So 3525-50-6 is a valid CAS Registry Number.

3525-50-6Relevant academic research and scientific papers

Versatile synthesis of 4-spiro-β-lactam-3-carbonitriles via the intramolecular nucleophilic cyclization of N-(p-hydroxyphenyl)cyanoacetamides

Abdellaoui, Hassane,Xu, Jiaxi

, p. 4323 - 4330 (2014/06/10)

A series of 4-spiro-cyclohexadienonyl-β-lactam-3-carbonitriles, 2,7-dioxo-1-azaspiro[3.5]nona-5,8-diene-3-carbonitriles, was synthesized in satisfactory to excellent yields via the intramolecular nucleophilic cyclization of N-(p-hydroxyphenyl)cyanoacetamides with iodobenzene diacetate (IBD) as oxidant and potassium hydroxide as base. Acetic 4-spiro-cyclohexadienonyl- β-lactam-3-carbimidic anhydrides were obtained when organic base triethylamine was applied instead of potassium hydroxide. The mechanisms of the intramolecular nucleophilic cyclization and formation of acetic β-lactam-3-carbimidic anhydrides were proposed. The cyclization is a sequence of nucleophilic ipso addition and oxidative dearomatization. The formation of acetic carbimidic anhydrides is an acid-catalyzed acetate addition to the nitriles.

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