6285-61-6

Basic information

• Product Name: 8,9-dihydrobenzo[h]cyclopenta[c]chromen-6(7H)-one
• CAS NO: 6285-61-6
• Molecular Formula: C₁₆H₁₂O₂
• Molecular Weight: 236.2653
• Mol File: 6285-61-6.mol
• Article Data: 6

Chemical Properties

• Boiling Point: 461.3°C at 760 mmHg
• Flash Point: 195.3°C
• Density: 1.3g/cm³
• Vapor Pressure: 1.08E-08mmHg at 25°C
• Refractive Index: 1.692
• CAS DataBase Reference: 8,9-dihydrobenzo[h]cyclopenta[c]chromen-6(7H)-one(CAS DataBase Reference)
• NIST Chemistry Reference: 8,9-dihydrobenzo[h]cyclopenta[c]chromen-6(7H)-one(6285-61-6)
• EPA Substance Registry System: 8,9-dihydrobenzo[h]cyclopenta[c]chromen-6(7H)-one(6285-61-6)

Safety Data

• Hazardous Substances Data: 6285-61-6(Hazardous Substances Data)

Upstream product

• 90-15-3 α-naphthol 
• 611-10-9 2-ethoxycarbonyl-1-cyclopentanone 

Relevant articles and documents

Silica sulfuric acid as an efficient and reusable catalyst for the pechmann synthesis of coumarins under solvent-free conditions

Silica sulfuric acid is used as an efficient catalyst in the Pechmann condensation of phenols with β-keto-esters leading to the formation of coumarin derivatives in excellent yields under solvent-free conditions. It was found that the catalyst could be recycled and reused for several runs.

Vanadium(III) chloride as an effective catalyst for the Pechmann reaction

Good yields of substituted coumarins were obtained by a synthetic method involving the Pechmann reaction using vanadium(III)chloride (VCl3) reagent to effect this condensation under solvent-free conditions. 2006 Springer Science+Business Media, Inc.

Sulphamic acid - An efficient and cost-effective solid acid catalyst for the pechmann reaction

Sulphamic acid (H2NSO3H, SA) is used as an alternative to conventional acid catalysts in the Pechmann condensation of phenols with β-ketoester leading to the formation of substituted coumarin. The method is simple, cost-effective, solvent-free and gives good yields in a short reaction time.