19740-75-1

Basic information

• Product Name: 9-oxabicyclo[4.2.1]nona-2,4-diene
• Synonyms: 9-Oxabicyclo(4.2.1)nona-2,4-diene; 9-Oxabicyclo[4.2.1]nona-2,4-diene
• CAS NO: 19740-75-1
• Molecular Formula: C₈H₁₀O
• Molecular Weight: 122.1644
• Mol File: 19740-75-1.mol
• Article Data: 4

Chemical Properties

• Melting Point: 29-32 °C
• Boiling Point: 188.5°C at 760 mmHg
• Flash Point: 61.3°C
• Density: 1.032g/cm³
• Vapor Pressure: 0.826mmHg at 25°C
• Refractive Index: 1.516
• CAS DataBase Reference: 9-oxabicyclo[4.2.1]nona-2,4-diene(CAS DataBase Reference)
• NIST Chemistry Reference: 9-oxabicyclo[4.2.1]nona-2,4-diene(19740-75-1)
• EPA Substance Registry System: 9-oxabicyclo[4.2.1]nona-2,4-diene(19740-75-1)

Safety Data

• Hazardous Substances Data: 19740-75-1(Hazardous Substances Data)

Upstream product

• 629-20-9 1,3,5,7-cyclooctatetraene 
• 1871-52-9 (1Z,3Z,5Z)-Cycloocta-1,3,5-triene 
• 1552-12-1 1,5-cis,cis-cyclooctadiene 
• 71098-90-3 (2S,5R)-2,5-Bis-phenylselanyl-9-oxa-bicyclo[4.2.1]nonane 

Relevant articles and documents

An Improved Preparation of 9-Oxabicyclonona-2,6-diene

A useful procedure for the synthesis of 9-oxabicyclonona-2,6-diene free of isomers is provided.

Oxidation of Selenides and Tellurides with Positive Halogenating Species

Treatment of diaryl or alkyl aryl selenides and diaryl or dialkyl tellurides first with a positive halogen source (N-chlorosuccinimide, tert-butyl hypochlorite) followed by alkaline hydrolysis (10percent sodium hydroxide, saturated sodium bicarbonate) gave the corresponding selenoxides or telluroxides (or hydrates) in good yield.The method is tolerant of a variety of functional groups including esters, olefins, alcohols, ethers, and ketones.The formal oxidation step is believed to be the formation of a chloroselenonium or chlorotelluronium species followed by hydrolysis. 1H NMR evidence is given for a benzylphenylselenonium species. Selenoxide fragmentation reactions during the hydrolysis step were observed