3,3-Diphenyl-3H-naphtho[2,1-b]pyran Chemical Properties

Melting point:

160°C

Boiling point:

511.1±50.0 °C(Predicted)

Density 

1.187±0.06 g/cm3(Predicted)

storage temp. 

Sealed in dry,Room Temperature

form 

powder to crystal

color 

White to Light yellow

Cosmetics Ingredients Functions

ANTIOXIDANT
COLORANT

InChI

InChI=1S/C25H18O/c1-3-10-20(11-4-1)25(21-12-5-2-6-13-21)18-17-23-22-14-8-7-9-19(22)15-16-24(23)26-25/h1-18H

InChIKey

UBNNJVRNPJVYBU-UHFFFAOYSA-N

SMILES

C12=CC=C3C(=C1C=CC(C1=CC=CC=C1)(C1=CC=CC=C1)O2)C=CC=C3

EPA Substance Registry System

3H-Naphtho[2,1-b]pyran, 3,3-diphenyl- (4222-20-2)

Safety Information

Risk Statements 

36/37/38

Safety Statements 

26-36/37/39

TSCA 

TSCA listed

HS Code 

2932.99.7000

3,3-Diphenyl-3H-naphtho[2,1-b]pyran Usage And Synthesis

Uses

3,3-Diphenyl-3H-naphtho[2,1-b]pyran is a useful research chemical compound used in the preparation and photochromism of naphthopyrans, pyranoquinolines, pyranoquinazolines, and pyranoquinoxalines.

Synthesis

The building of the 3,3-diphenyl-3H-naphtho[2,1-b]pyrans can be achieved by a 'one-pot reaction' starting from a suitable naphthol and 1,1-diphenyl-2-yn-1-ol^[1]. This condensation reaction takes place in an apolar solvent (toluene, CH2Cl2) under acid catalysis.

References

[1] Frigoli, M., Moustrou, C., Samat, A., & Guglielmetti, R. (2003). Synthesis of New Thiophene-Substituted 3,3-Diphenyl-3H-naphtho[2,1-b]pyrans by Cross-Coupling Reactions, Precursors of Photomodulated Materials. European Journal of Organic Chemistry, 2003 15, 2799–2812. https://doi.org/10.1002/ejoc.200300033

3,3-Diphenyl-3H-naphtho[2,1-b]pyran(4222-20-2)Related Product Information

• Benzo[b]thien-2-ylboronic acid
• Tetrahydropyran
• Centchroman
• Biphenyl
• benzopyran
• (R)-1-PHENYL-2-PROPEN-1-OL
• (S)-1-PHENYL-2-PROPEN-1-OL
• 3,3-Diphenyl-3H-naphtho[2,1-b]pyran