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| | Dimethyl acetylmethylphosphonate Basic information |
| | Dimethyl acetylmethylphosphonate Chemical Properties |
| Boiling point | 76-79 °C3 mm Hg(lit.) | | density | 1.202 g/mL at 25 °C(lit.) | | refractive index | n20/D 1.439(lit.) | | Fp | 200 °F | | storage temp. | Keep in dark place,Sealed in dry,Room Temperature | | solubility | Difficult to mix. | | form | Liquid | | color | Clear colorless to light brown | | BRN | 1766218 | | InChI | InChI=1S/C5H11O4P/c1-5(6)4-10(7,8-2)9-3/h4H2,1-3H3 | | InChIKey | UOWIYNWMROWVDG-UHFFFAOYSA-N | | SMILES | P(CC(=O)C)(=O)(OC)OC | | CAS DataBase Reference | 4202-14-6(CAS DataBase Reference) | | NIST Chemistry Reference | Dimethyl (2-oxopropyl)phosphonate(4202-14-6) |
| Hazard Codes | Xi | | Safety Statements | 23-24/25 | | WGK Germany | 3 | | F | 10 | | Hazard Note | Irritant | | HS Code | 29310095 |
| | Dimethyl acetylmethylphosphonate Usage And Synthesis |
| Chemical Properties | CLEAR COLOURLESS TO LIGHT BROWN LIQUID | | Uses | Dimethyl acetylmethylphosphonate is a Reagent used together with tosyl azide in a one-pot alkynylation of aldehydes. | | Synthesis Reference(s) | Tetrahedron Letters, 17, p. 2829, 1976 DOI: 10.1016/S0040-4039(01)85513-1 | | reaction suitability | reaction type: C-C Bond Formation | | Synthesis | General procedure for the synthesis of dimethyl acetone-based phosphonate from chloroacetone and trimethoxyphosphine: a dry and clean 500 mL coil was heated to 135 °C. 1000 g (0.7 eq., 10.81 mol) of chloroacetone (boiling point 117 to 119 °C at standard atmospheric pressure) was placed in charge bottle A and diluted with 4000 g of toluene. 1878 g (1.0 eq., 15.13 mol) of trimethoxyphosphine (boiling point at 112°C at standard atmospheric pressure) was placed in charge bottle B and diluted with 3122 g of toluene. After the temperature was stabilized, batch pumping of the chloroacetone-toluene solution in Bottle A and the trimethoxyphosphine-toluene solution in Bottle B was started at a rate of 12.5 g/min. The residence time of the reactants was 20 min, and the reaction pressure was maintained at 0.5 to 2.0 MPa. The reacted mixture was directly introduced into a thin-film evaporation unit, with a controlled pressure of 4 to 10 x 10^2 Pa and a temperature of between 60 and 70 °C. The reaction was carried out at a pressure of 4 to 10 x 10^2 Pa. Ultimately, 1230 g of dimethyl acetone-based phosphonate (boiling point 85 to 88 °C, 666 Pa) was obtained in 88% yield. | | References | [1] Patent: CN107163079, 2017, A. Location in patent: Paragraph 0076; 0077; 0078
[2] Organic Letters, 2015, vol. 17, # 5, p. 1308 - 1311
[3] Journal of Medicinal Chemistry, 2013, vol. 56, # 21, p. 8765 - 8780
[4] Journal of the American Chemical Society, 1995, vol. 117, # 10, p. 2931 - 2932
[5] Organic and Biomolecular Chemistry, 2017, vol. 15, # 15, p. 3304 - 3309 |
| | Dimethyl acetylmethylphosphonate Preparation Products And Raw materials |
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