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Dimethyl methylphosphonate_Molecular_structure_CAS_756-79-6)
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Dimethyl methylphosphonate

Catalog No. A14268 Name Alfa Aesar
CAS Number 756-79-6 Website
M. F. C3H9O3P Telephone
M. W. 124.075521 Fax
Purity 97% Email
Storage Chembase ID: 74984

SYNONYMS

Title
甲基磷酸二甲酯
IUPAC name
dimethyl methylphosphonate
IUPAC Traditional name
dimethyl methylphosphonate
Synonyms
Methylphosphonic acid dimethyl ester
DMMP

DATABASE IDS

CAS Number 756-79-6
EC Number 212-052-3
MDL Number MFCD00008349
Beilstein Number 878263
Merck Index 143391

PROPERTIES

Purity 97%
Boiling Point 180-181°C
Density 1.16
Flash Point 68°C(154°F)
Refractive Index 1.4130
GHS Pictograms GHS07
GHS Pictograms GHS08
GHS Hazard statements H340-H319-H227-H402-H412
European Hazard Symbols Toxic Toxic (T)
GHS Precautionary statements P210-P280-P281-P305+P351+P338-P405-P501A
Risk Statements 46-36-52/53
RTECS SZ9120000
Safety Statements 53-45-61
TSCA Listed

DETAILS

REFERENCES

  • See also Diethyl methylphosphonate, A14772 and Appendix 1.
  • The lithio-derivative reacts with esters to give ?-ketophosphonates, useful precursors of ɑ?-unsaturated ketones by Horner-Wadsworth-Emmons olefination: J. Am. Chem. Soc., 88, 5654 (1966). An intramolecular version leads to cyclopentenones: Synth. Commun., 5, 1 (1975); Tetrahedron Lett., 22, 257 (1981). Dimethyl glutarate gives the 3-(phosphonatomethyl)cyclohexenone, olefination of which affords the corresponding 3-alkenylcycloalkenone. Dimethyl succinate also gives this reaction, but in lower yield; higher diesters give acyclic products: J. Org. Chem., 59, 1943 (1994):