78490-21-8

Basic information

• Product Name: 8-(4-Methoxyphenyl)-8,14-methanobenzo[7,8][1,3]dioxocin-[5,4-c]chromen-1(14H)-one
• Synonyms: 8-(4-Methoxyphenyl)-8,14-methanobenzo[7,8][1,3]dioxocin-[5,4-c]chromen-1(14H)-one
• CAS NO: 78490-21-8
• Molecular Weight: 398.415
• Mol File: 78490-21-8.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: 8-(4-Methoxyphenyl)-8,14-methanobenzo[7,8][1,3]dioxocin-[5,4-c]chromen-1(14H)-one(CAS DataBase Reference)
• NIST Chemistry Reference: 8-(4-Methoxyphenyl)-8,14-methanobenzo[7,8][1,3]dioxocin-[5,4-c]chromen-1(14H)-one(78490-21-8)
• EPA Substance Registry System: 8-(4-Methoxyphenyl)-8,14-methanobenzo[7,8][1,3]dioxocin-[5,4-c]chromen-1(14H)-one(78490-21-8)

Safety Data

• Hazardous Substances Data: 78490-21-8(Hazardous Substances Data)

Upstream product

• 1076-38-6 4-hydroxy[1]benzopyran-2-one 
• 58721-41-8 2-hydroxy-4'-methoxychalcone 
• 90-02-8 salicylaldehyde 
• 100-06-1 1-(4-methoxyphenyl)ethanone 
• 22105-09-5 4‐hydroxycoumarin 
• 4134-79-6 4'-hydroxy flavylium chloride 

Relevant articles and documents

Investigations on the Thermoelectric Transport Properties in the Hole-doped La2CuO4

Compared with the traditional thermoelectric semiconductors, the research progress of thermoelectric oxides with high-temperature thermal stability is far behind. In this work, a layered copper oxide La2CuO4 was synthesized by combining the high-energy ball milling, solid state reaction and spark plasma sintering. By introducing metal elements (Ba, Sr, Pb) at La site, the increased carrier concentration with optimized electrical transport properties were achieved in La2CuO4-based thermoelectric oxides. Results showed that Ba has the best doping effect among the three dopants, with an optimal carrier concentration of ～1020 cm?3. Furthermore, the figure of merit (ZT) value was enhanced over the entire temperature range with a maximum ZTave of ～0.03 at 300–923 K, which is nearly two orders of magnitude higher than that of printine La2CuO4. Our research has successfully developed the thermoelectric properties of La2CuO4-based oxide, which has the great potential to be a reliable candidate as the thermocouple for high-temperature detection in the key parts of aircrafts.

A mild efficient iodine-catalyzed synthesis of novel anticoagulants with 2,8-dioxabicyclo[3.3.1]nonane core

An efficient coupling of 2-hydroxychalcones/α,β-enones with 4-hydroxycoumarin/5,5-dimethylcyclohexyl-1,3-dione (dimedone) has been accomplished to provide access to a novel class of potential anticoagulants with 2,8-dioxabicyclo[3.3.1]nonane core. The reaction proceeds by Michael-bicycloketalization sequence under iodine catalysis (10 mol %) in aqueous ethanol under reflux. Good to excellent yields, impressive selectivity, absence of byproduct formation, avoidance of toxic organic solvents, and utilization of metal-free water-compatible mild Lewis acid catalyst are the key attractive features of this protocol.