207738-63-4

Basic information

• Product Name: 2-(1-methyl-1-phenylethyl)-4-(1,1,3,3-tetramethylbutyl)-6-[5-(trifluoromethyl)-2H-benzotriazol-2-yl]phenol
• Synonyms: 2-(2-Phenylpropan-2-yl)-6-[5-(trifluoromethyl)-2H-benzotriazol-2-yl]-4-(2,4,4-trimethylpentan-2-yl)phenol; phenol, 2-(1-methyl-1-phenylethyl)-4-(1,1,3,3-tetramethylbutyl)-6-[5-(trifluoromethyl)-2H-1,2,3-benzotriazol-2-yl]-
• CAS NO: 207738-63-4
• Molecular Formula: C₃₀H₃₄F₃N₃O
• Molecular Weight: 509.6057
• Mol File: 207738-63-4.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 564.23°C at 760 mmHg
• Flash Point: 295.036°C
• Density: 1.152g/cm³
• Vapor Pressure: 0mmHg at 25°C
• Refractive Index: 1.555
• CAS DataBase Reference: 2-(1-methyl-1-phenylethyl)-4-(1,1,3,3-tetramethylbutyl)-6-[5-(trifluoromethyl)-2H-benzotriazol-2-yl]phenol(CAS DataBase Reference)
• NIST Chemistry Reference: 2-(1-methyl-1-phenylethyl)-4-(1,1,3,3-tetramethylbutyl)-6-[5-(trifluoromethyl)-2H-benzotriazol-2-yl]phenol(207738-63-4)
• EPA Substance Registry System: 2-(1-methyl-1-phenylethyl)-4-(1,1,3,3-tetramethylbutyl)-6-[5-(trifluoromethyl)-2H-benzotriazol-2-yl]phenol(207738-63-4)

Safety Data

• Hazardous Substances Data: 207738-63-4(Hazardous Substances Data)

Upstream product

• 73936-80-8 2-cumyl-4-(1,1,3,3-tetramethylbutyl)-phenol 
• 121-50-6 3-amino-4-chlorobenzotrifluoride 
• 117-80-6 2,3-Dichloro-1,4-naphthoquinone 
• 78-92-2 iso-butanol 
• 286471-09-8 2-hydroxy-2'-nitro-4'-trifluoromethyl-3-α-cumyl-5-tert-octylazobenzene 

Relevant articles and documents

NOVEL PROCEDURE FOR THE FORMATION OF 2H-BENZOTRIAZOLE BODIES AND CONGENERS

The present invention relates to a process for the preparation of 2H-benzotriazole compounds and congeners, novel 2H-benzotriazole compounds and congeners and their use as UV absorbers in coatings and bulk plastics.

Processes for the preparation of benzotriazole UV absorbers

Provided is a process for preparing 2H-benzotriazole UV absorbers containing a perfluoroalkyl moiety at the 5-position of the benzo ring, for example a trifluoromethyl group, which involves diazotizing the perfluoroalkyl substituted o-nitroaniline using concentrated sulfuric acid plus sodium nitrite or nitrosylsulfuric acid to form the corresponding monoazobenzene intermediate via the diazonium salt intermediate which is reduced to the corresponding 5-perfluoroalkyl substituted 2H-benzotriazole UV absorber compound by conventional reduction means. Also provided is a novel one-pot, multiphase reaction for the preparation of 2(2-nitrophenylazo) substituted phenols, which are precursors for 2H-benzotriazole UV absorbers.

Processes for the preparation of benzotriazole UV absorbers

Provided is a process for preparing 2H-benzotriazole UV absorbers containing a perfluoroalkyl moiety at the 5-position of the benzo ring, for example a trifluoromethyl group, which involves diazotizing the perfluoroalkyl substituted o-nitroaniline using concentrated sulfuric acid plus sodium nitrite or nitrosylsulfuric acid to form the corresponding monoazobenzene intermediate via the diazonium salt intermediate which is reduced to the corresponding 5-perfluoroalkyl substituted 2H-benzotriazole UV absorber compound by conventional reduction means. Also provided is a novel one-pot, multiphase reaction for the preparation of 2(2-nitrophenylazo) substituted phenols, which are precursors for 2H-benzotriazole UV absorbers.