2288-98-4

Basic information

• Product Name: 6H,11H-[2]Benzopyrano[4,3-c][1]benzopyran-6,11-dione
• Synonyms: 6H,11H-[2]Benzopyrano[4,3-c][1]benzopyran-6,11-dione
• CAS NO: 2288-98-4
• Molecular Formula: C₁₆H₈O₄
• Molecular Weight: 264.2323
• Mol File: 2288-98-4.mol
• Article Data: 7

Chemical Properties

• Boiling Point: 488.6°Cat760mmHg
• Flash Point: 260.5°C
• Appearance: /
• Density: 1.49g/cm³
• Vapor Pressure: 1.07E-09mmHg at 25°C
• Refractive Index: 1.708
• CAS DataBase Reference: 6H,11H-[2]Benzopyrano[4,3-c][1]benzopyran-6,11-dione(CAS DataBase Reference)
• NIST Chemistry Reference: 6H,11H-[2]Benzopyrano[4,3-c][1]benzopyran-6,11-dione(2288-98-4)
• EPA Substance Registry System: 6H,11H-[2]Benzopyrano[4,3-c][1]benzopyran-6,11-dione(2288-98-4)

Safety Data

• Hazardous Substances Data: 2288-98-4(Hazardous Substances Data)

Usage

InChI:InChI=1/C16H8O4/c17-15-10-6-2-1-5-9(10)13-14(20-15)11-7-3-4-8-12(11)19-16(13)18/h1-8H

Upstream product

• 79359-50-5 1,2,3,4-tetrahydro<2>benzopyrano<4,3-c><1>benzopyran-5,12-dione 
• 1076-38-6 4-hydroxy[1]benzopyran-2-one 
• 23031-08-5 benzoyl(pyridin-1-ium-1-yl)amide 
• 86795-49-5 3-(phenyl-λ³-iodanylidene)chromane-2,4-dione 
• 98-88-4 benzoyl chloride 
• 2446-51-7 N-methoxybenzamide 
• 495-79-4 2-hydroxycinnamic acid 
• 88-65-3 2-bromobenzoic-acid 
• 65-85-0 benzoic acid 
• 1655-07-8 ethyl 2-oxocyclohexane carboxylate 
• 102-09-0 bis(phenyl) carbonate 
• 1786-05-6 4-hydroxy-3-phenylcoumarin 

Downstream Products

• 81450-25-1 2-hydroxy-2'-carboxydeoxybenzoin 
• 76127-49-6 3-(2-hydroxyphenyl)-1H-isochromen-1-one 
• 81450-26-2 3-(o-acetoxyphenyl)isocoumarin 

Relevant articles and documents

Use of 2-(methoxycarbonyl)phenyllead triacetate in lactone synthesis

Reactions of 2-(methoxycarbonyl)phenyllead triacetate with β-oxo lactones and phenols in the presence of pyridine afforded polycyclic lactones in good yields. A one-pot three-step synthesis without isolation of intermediate products was developed.

Pd(II)-Catalyzed Oxidative Annulation via Double C-H Activations: Synthesis and Photophysical Properties of Bis-Coumarins

A Pd(II)-catalyzed oxidative annulation reaction of 4-hydroxycoumarin and arylcarboxylic acid via double C-H bond activations has been accomplished for the synthesis of bis-coumarins. This synthetic strategy provides a wide range of structurally diversified bis-coumarins in moderate to good yields with a variety of functional group compatibility. Moreover, photophysical properties of synthesized bis-coumarins have been evaluated, which reveals their interesting fluorescent properties.

Method for preparing 5, 12-dioxoanthracene-6, 11-diketone compound through nickel catalysis

The invention discloses a method for preparing a 5, 12-dioxoanthracene-6, 11-diketone compound through nickel catalysis. The preparation method comprises the following steps: a 2-hydroxyphenyl allyl propionic acid compound and a 2-halogenated benzoic acid compound fully react under the promotion of N, N-dimethylformamide (DMF) serving as a medium, nickel tetracarbonyl serving as a catalyst and sodium ethoxide serving as alkali to obtain a target product, and the product is subjected to aftertreatment to obtain the 5, 12-dioxoanthracene-6, 11-diketone compound. In the reaction formula, R1 is selected from one of hydrogen, methyl and methoxyl; R2 is selected from one of hydrogen and methyl; and X (halogen) is selected from one of bromine and iodine. According to the method, nickel is adoptedas a catalyst, and efficient preparation of the 5, 12-dioxoanthracene-6, 11-diketone compound is achieved. The method has the advantages of high catalytic efficiency, low substrate cost, simple operation, low equipment requirement, excellent yield and the like.