Oxetane

Oxetane
Oxetane
IUPAC name
Oxetane
Other names
1,3-propylene oxide
1,3-epoxypropane
oxacyclobutane
trimethylene oxide
Identifiers
CAS number 503-30-0 YesY
UNII I279Q16FU6 YesY
Jmol-3D images Image 1
Properties
Molecular formula C3H6O
Molar mass 58.08 g mol−1
Density 0.8930 g/cm3
Boiling point

49–50 °C
Hazards
Flash point −19.0 °F (NTP, 1992)
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Oxetane, or 1,3-propylene oxide, is an heterocyclic organic compound with the molecular formula C3H6O, having a four-membered ring with three carbon atoms and one oxygen atom.

The term oxetane may also refer more generally to any organic compound containing an oxetane ring.

Contents

Production

A typical well known method of preparation is the reaction of potassium hydroxide with 3-chloropropyl acetate at 150°C[1] Yield of oxetane made this way is ca. 40%, as the synthesis can lead to a variety of by-products.

Other possible reactions to form oxetane ring is the Paternò–Büchi reaction. Also, diol cyclization can form oxetane ring.

Taxol

Paclitaxel with oxetane ring at right.

Paclitaxel (Taxol) is an example of a natural product containing an oxetane ring. Taxol has become a major point of interest among researchers due to its unusual structure and success in the involvement of cancer treatment.[2] The attached oxetane ring is an important feature that is used for the binding of microtubules in structure activity, however little is known about how the reaction is catalyzed in nature, which creates a challenge for scientists trying to synthesize the reaction.[2]


See also

  • β-Propiolactone or 2-oxetanone.
  • 3-Oxetanone

References

  1. ^ C. R. Noller (1955), "trimethylene oxide", Org. Synth. 29: 92, http://www.orgsyn.org/orgsyn/orgsyn/prepContent.asp?prep=CV3P0835 ; Coll. Vol. 3: 835 
  2. ^ a b Willenbring, Dan, and Dean J. Tantillo.. "Mechanistic possibilities for oxetane formation in the biosynthesis of Taxol’s D ring." Russian Journal of General Chemistry 78.4 (Apr. 2008): 7237–31. Advanced Placement Source. EBSCO. [Library name], [City], [State abbreviation]. 22 Apr. 2009 <http://search.ebscohost.com/login.aspx?direct=true&db=aqh&AN=32154883&site=ehost-live>

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