229-95-8

Basic information

• Product Name: 6H-Dibenzo[b,d]pyran
• Synonyms: 6H-Dibenzo[b,d]pyran
• CAS NO: 229-95-8
• Molecular Formula: C₁₃H₁₀O
• Molecular Weight: 182.2179
• Mol File: 229-95-8.mol
• Article Data: 12

Chemical Properties

• Boiling Point: 333.4 °C at 760 mmHg
• Flash Point: 151.8 °C
• Appearance: /
• Density: 1.159 g/cm³
• Vapor Pressure: 0.000265mmHg at 25°C
• Refractive Index: 1.622
• CAS DataBase Reference: 6H-Dibenzo[b,d]pyran(CAS DataBase Reference)
• NIST Chemistry Reference: 6H-Dibenzo[b,d]pyran(229-95-8)
• EPA Substance Registry System: 6H-Dibenzo[b,d]pyran(229-95-8)

Safety Data

• Hazardous Substances Data: 229-95-8(Hazardous Substances Data)

Usage

Synthesis Reference(s)

Journal of the American Chemical Society, 113, p. 7676, 1991 DOI: 10.1021/ja00020a033

InChI:InChI=1/C13H10O/c1-2-6-11-10(5-1)9-14-13-8-4-3-7-12(11)13/h1-8H,9H2

Upstream product

• 67-56-1 methanol 
• 92-83-1 xanthene 
• 142523-69-1 1-benzyloxy-2-iodobenzene 
• 40400-13-3 2-Iodobenzyl bromide 
• 108-95-2 phenol 
• 94191-73-8 1-bromo-2-(phenoxymethyl)benzene 
• 3433-80-5 1-Bromo-2-bromomethyl-benzene 
• 95-56-7 2-hydroxybromobenzene 
• 100-44-7 benzyl chloride 
• 91718-21-7 1-iodo-2-(phenoxymethyl)benzene 

Downstream Products

• 2005-10-9 6H-benzo[c]chromen-6-one 
• 1689-64-1 9-Fluorenol 

Related news

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Relevant articles and documents

Visible light mediated synthesis of 6H-benzo[c]chromenes: transition-metal-free intramolecular direct C-H arylation

A synthetic approach towards the 6H-benzo[c]chromene ring under visible light and transition-metal-free conditions has been developed. Benzochromenes are synthesized from the corresponding (2-halobenzyl) phenyl ethers or (2-halophenyl) benzyl ethers using

Organic super-electron-donors: Initiators in transition metal-free haloarene-arene coupling

Recent papers report transition metal-free couplings of haloarenes to arenes to form biaryls, triggered by alkali metal tert-butoxides in the presence of various additives. These reactions proceed through radical intermediates, but understanding the origin of the radicals has been problematic. Electron transfer from a complex formed from potassium tert-butoxide with additives, such as phenanthroline, has been suggested to initiate the radical process. However, our computational results encouraged us to search for alternatives. We report that heterocycle-derived organic electron donors achieve the coupling reactions and these donors can form in situ in the above cases. We show that an electron transfer route can operate either with phenanthrolines as additives or using pyridine as solvent, and we propose new heterocyclic structures for the respective electron donors involved in these cases. In the absence of additives, the coupling reactions are still successful, although more sluggish, and in those cases benzynes are proposed to play crucial roles in the initiation process.

Ultrasound-promoted intramolecular direct arylation in a capillary flow microreactor

An intramolecular direct arylation of various aryl bromides was performed using ultrasonic irradiation and a continuous flow capillary microreactor. The present procedure provided a higher functional group tolerance, ligand-free, milder reaction condition