191-28-6

Basic information

• Product Name: Xantheno[2,1,9,8-klmna]xanthene
• Synonyms: Xantheno[2,1,9,8-klmna]xanthene;Dinaphthylene dioxide
• CAS NO: 191-28-6
• Molecular Formula: C₂₀H₁₀O₂
• Molecular Weight: 282.2922
• Mol File: 191-28-6.mol
• Article Data: 8

Chemical Properties

• Melting Point: 243.5°C
• Boiling Point: 384.91°C (rough estimate)
• Flash Point: 231.2°C
• Appearance: /
• Density: 1.1639 (rough estimate)
• Vapor Pressure: 2.07E-10mmHg at 25°C
• Refractive Index: 1.6440 (estimate)
• CAS DataBase Reference: Xantheno[2,1,9,8-klmna]xanthene(CAS DataBase Reference)
• NIST Chemistry Reference: Xantheno[2,1,9,8-klmna]xanthene(191-28-6)
• EPA Substance Registry System: Xantheno[2,1,9,8-klmna]xanthene(191-28-6)

Safety Data

• Hazardous Substances Data: 191-28-6(Hazardous Substances Data)

Usage

General Description

Xantheno[2,1,9,8-klmna]xanthene is a complex organic chemical compound with a fused xanthene ring system. It is commonly used in the preparation of dyes, pigments, fluorescent materials, and fluorescent indicators for biological studies. Xantheno[2,1,9,8-klmna]xanthene exhibits strong fluorescent properties, making it useful in various applications, including in the pharmaceutical, cosmetic, and textile industries. Additionally, xantheno[2,1,9,8-klmna]xanthene has been studied for its potential biological activities and therapeutic properties, showing promise as a potential drug candidate for the treatment of various diseases. Its unique structure and properties make it a valuable and versatile compound in the field of chemistry and material science.

InChI:InChI=1/C20H10O2/c1-3-11-7-9-16-19-17(11)13(5-1)21-15-10-8-12-4-2-6-14(22-16)18(12)20(15)19/h1-10H

Upstream product

• 573-97-7 1-bromo-2-naphthol 
• 497-19-8 sodium carbonate 
• 98-95-3 nitrobenzene 
• 602-09-5 1,1'-bi-2-naphthol 
• 18531-92-5 2,2'-dihydroxy-1,1'-binaphthalene-3,3'-dicarboxylic acid 
• 106714-75-4 2,2'-bis-dibenzo[a,kl]xanthen-1-ylperoxy-[1,1']binaphthyl 
• 71-43-2 benzene 
• 135-19-3 β-naphthol 
• 92-70-6 3-Hydroxy-2-naphthoic acid 
• 91-22-5 quinoline 
• 7758-99-8 copper(II) sulfate 
• 7647-01-0 hydrogenchloride 
• 855256-63-2 N,N'-(2,2'-dihydroxy-[1,1']binaphthyl-8,8'-diyl)-bis-acetamide 
• 851615-24-2 13C-hydroxy-13cH-dibenzo[a,kl]xanthen-1-one 

Downstream Products

• 602-09-5 1,1'-bi-2-naphthol 
• 854661-73-7 3,9-bis-(2-carboxy-benzoyl)-perixanthenoxanthene 

Relevant articles and documents

A highly selective synthesis of 1,1'-Bi-2-naphthol by oxidative coupling of naphthol on mesoporous Fe,Cu/MCM-41 aluminosilicates

The oxidative coupling of 2-naphtol to 2,2'-dihydroxy-1,1'-binaphthyl (binaphthol) by air or oxygen has been carried out in the presence of Cu2+- and Fe3+-doped MCM-41 aluminosilicate as catalyst. Fe-exchanged MCM-41 was found to be a very efficient catalyst; excellent mass balances (> 95%) with almost total conversion and selectivity to binaphthol were achieved. The same reaction has also been carried out on Cu2+- and Fe3+-Y zeolites. Taking into account the relative dimensions of binaphthol and the catalyst pores, molecular modeling predicts that binaphthol can be accommodated inside the zeolite Y supercages (1.3 nm), but it cannot diffuse outside the zeolite cavities through the smaller pore apertures (0.74 nm). This prediction has been confirmed by dissolving a Y zeolite after the reaction, whereby unextractable binaphthol entrapped within the cavities was recovered. Variable amounts of two secondary by-products have also been detected, and their structure assigned to (2,8');(8,2')-dioxo-1,1'-binaphthyl and bisnaphthofuran based on analytical and spectroscopic data. Their percentage is particularly high when alumina-supported CuSO4 is used as the catalyst.

A peri-Xanthenoxanthene Centered Columnar-Stacking Organic Semiconductor for Efficient, Photothermally Stable Perovskite Solar Cells

Modulating the structure and property of hole-transporting organic semiconductors is of paramount importance for high-efficiency and stable perovskite solar cells (PSCs). This work reports a low-cost peri-xanthenoxanthene based small-molecule P1, which is

Tandem Living Insertion and Controlled Radical Polymerization for Polyolefin–Polyvinyl Block Copolymers

Practical synthesis of polyolefin–polyvinyl block copolymers remains a challenge for transition-metal catalyzed polymerizations. Common approaches functionalize polyolefins for post-radical polymerization via insertion methods, yet sacrifice the livingness of the olefin polymerization. This work identifies an orthogonal radical/spin coupling technique which affords tandem living insertion and controlled radical polymerization. The broad tolerance of this coupling technique has been demonstrated for diverse radical/spin traps such as 2,2,5-trimethyl-4-phenyl-3-azahexane-3-nitroxide (TIPNO), 1-oxyl-(2,2,6,6-tetramethylpiperidine) -4-yl-α-bromoisobutyrate (TEMPO-Br), and N-tert-butyl-α-phenylnitrone (PBN). Subsequent controlled radical polymerization is demonstrated with nitroxide-mediated polymerization (NMP) and atom transfer radical polymerization (ATRP), yielding polyolefin–polyvinyl di- and triblock copolymers (?1.3) with acrylic, vinylic and styrenic segments. These findings highlight radical trapping as an approach to expand the scope of polyolefin-functionalization techniques to access polyolefin macroinitiators.

Preparation method of reactive fluorescent probe for rapid hydrazine detection

The invention discloses a preparation method of a reactive fluorescent probe for rapid hydrazine detection, and relates to the field of fluorescent probes. The method comprises the steps: adding powdery 2-naphthol into an aqueous solution of FeCl3.6H2O to