211796-93-9

Basic information

• Product Name: 3H-Naphtho[2,1-b]pyran, 3-(4-methoxyphenyl)-3-(2-thienyl)-
• CAS NO: 211796-93-9
• Molecular Formula: C24H18O2S
• Molecular Weight: 370.472
• Mol File: 211796-93-9.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: 3H-Naphtho[2,1-b]pyran, 3-(4-methoxyphenyl)-3-(2-thienyl)-(CAS DataBase Reference)
• NIST Chemistry Reference: 3H-Naphtho[2,1-b]pyran, 3-(4-methoxyphenyl)-3-(2-thienyl)-(211796-93-9)
• EPA Substance Registry System: 3H-Naphtho[2,1-b]pyran, 3-(4-methoxyphenyl)-3-(2-thienyl)-(211796-93-9)

Safety Data

• Hazardous Substances Data: 211796-93-9(Hazardous Substances Data)

Upstream product

• 135-19-3 β-naphthol 
• 211796-85-9 1-(thiophen-2-yl)-1-(4-methoxyphenyl)-prop-2-yn-1-ol 
• 4160-63-8 2-(4-methoxybenzoyl)thiophene 

Downstream Products

• 1032582-06-1 3-{5-((4-dimethylaminophenyl)(phenyl)hydroxymethyl)thien-2-yl}-3-(4-methoxyphenyl)-3H-naphtho[2,1-b]pyran 
• 1032582-08-3 3-{5-((4-diethylaminophenyl)(phenyl)hydroxymethyl)thien-2-yl}-3-(4-methoxyphenyl)-3H-naphtho[2,1-b]pyran 

Relevant articles and documents

Two stage colour modulation of triarylmethine dyes derived from a photochromic naphthopyran

The synthesis of the unsymmetrical triarylmethine dyes 4 derived from a lithiated naphthopyran and diaryl ketones is reported. In toluene solution 4 display a typical reversible photochromic response becoming coloured upon irradiation with UV light and fa

Facile One-Pot Synthesis of Photochromic Pyrans

(Equation presented) Photochromic pyrans, including [3H]naphtho[2,1-b] pyrans, [2H]naphtho[1,2-b]pyrans, indeno-fused naphtho[1,2-b]pyrans, and heteroannulated pyrans, were synthesized in excellent yields through a facile one-pot procedure by reaction of propargyl alcohol and naphthol or phenol derivatives in the presence of 5 mol% PPTS and 2 equiv of (MeO)3CH. Symmetrical and nonsymmetrical bispyrans can also be prepared using the protocol.