Methoxymethylenetriphenylphosphorane

Methoxymethylene­triphenylphosphorane
Names
IUPAC name
Methoxymethylidene(triphenyl)-λ5-phosphane
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/C20H19OP/c1-21-17-22(18-11-5-2-6-12-18,19-13-7-3-8-14-19)20-15-9-4-10-16-20/h2-17H,1H3
    Key: DYROHZMICXBUMX-UHFFFAOYSA-N
  • COC=P(C1=CC=CC=C1)(C2=CC=CC=C2)C3=CC=CC=C3
Properties
C20H19OP
Molar mass 306.345 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Methoxymethylenetriphenylphosphorane is a Wittig reagent used for the homologation of aldehydes, and ketones to extended aldehydes. The reagent is generally prepared and used in situ. It has blood-red color, indicative of destabilized ylides.

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