Oxepane
- Hexamethylene
- Oxacycloheptan
Clear, slightly yellowish liquid
Liquid
0.90 g · cm -3
124-126 ° C
1.4400 (20 ° C)
Template: Infobox chemical / molecular formula search available
Oxepane is a chemical compound selected from the group consisting of saturated heterocycles. It is the easiest seven-membered oxygen-containing heteroaliphatics.
Representation
The representation of oxepane succeed from the cyclization of 1,6-hexanediol in DMSO at 190 ° C, but only in poor yield. Another possibility, but provides a comparably poor yield, the cyclization of 1,6 - dichlorohexane with potassium hydroxide.
Reactions
Oxepanes can be used by the ring opening for the display of α, ω -functionalized derivative of the hexane. For ring opening Lewis or Brønsted acids can be used. Thus, the reaction of oxepane with phenyldichlorophosphate and sodium 1,6 - diiodohexane.
From the reaction with boron tribromide, followed by PCC oxidation Bromhexanal 6 is accessible.