87286-91-7

Basic information

• Product Name: bis(4-di-n-butylamino-2-hydroxyphenyl)squaraine
• Synonyms: bis(4-di-n-butylamino-2-hydroxyphenyl)squaraine
• CAS NO: 87286-91-7
• Molecular Weight: 520.712
• Mol File: 87286-91-7.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: bis(4-di-n-butylamino-2-hydroxyphenyl)squaraine(CAS DataBase Reference)
• NIST Chemistry Reference: bis(4-di-n-butylamino-2-hydroxyphenyl)squaraine(87286-91-7)
• EPA Substance Registry System: bis(4-di-n-butylamino-2-hydroxyphenyl)squaraine(87286-91-7)

Safety Data

• Hazardous Substances Data: 87286-91-7(Hazardous Substances Data)

Upstream product

• 591-27-5 m-Hydroxyaniline 
• 43141-69-1 3-(N,N-dibutylamino)phenol 
• 2892-51-5 squaric acid 

Downstream Products

• 147598-48-9 2,4-bis<4-(dibutylamino)-2-hydroxyphenyl>-squaraine 

Relevant articles and documents

Compound and coloring composition

The invention provides a novel compound and a coloring composition.

COLORED CURABLE RESIN COMPOSITION

The present invention provides a colored curable resin composition comprising: a colorant including a green dye (A); a resin (B); a polymerizable compound (C); a polymerization initiator (D); a solvent (E); and a colorless metal chelating agent (G).C

Conformational isomerism in squaraines: saturation transfer NMR studies on hydroxy squaraines

The proton and 13C NMR of azulene and dialkylaminohydroxyphenyl squaraines have been investigated.The four-membered ring carbon resonances occur in the 180-190 ppm range and are attributed to the cyclobutenediylium character of this structure.Some charge delocalization from the central ring to the pendent aromatic substitutents was also observed, indicative of a substituent effect of the squaraine moiety on aminoaromatic systems equivalent to that of a formyl or acetyl group.Hydroxy squaraines 10 and 11 show the presence of two isomeric squaraine species in the proton NMR in deuterochloroform.Saturation transfer experiments confirm that these species are readily interconverted, and cis/trans isomerism (9a 9b) is consistent with these observations.The free energy difference between the two isomers at 318 K is calculated to be 3.0 and 3.2 kJ/mol for hydroxysquaraines 10 and 11 respectively.