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CAS No 2033-24-1 , 2,2-dimethyl-1,3-dioxane-4,6-dione Search by region : Belgium

  • Name: 2,2-dimethyl-1,3-dioxane-4,6-dione
  • Synonyms: 2,2-Dimethyl-1,3-dioxane-4,6-dione; Isopropylidene malonate; 2033-24-1; Meldrum's acid; sub-Isopropyl malonate; Meldrums acid;2,2-dimethyl-1,3-dioxane-4,6-dione; cycl-Isopropylidene malonate;
  • CAS Registry Number:
  • Melting Point: 92-96 ºC
  • Density: 1.201 g/cm3
  • Refractive index: 1.571
  • Water Solubility: 2.5 G/100 ML (20 ºC)
  • Safety Statements: R36/37/38
  • Hazard Symbols: Xi: Irritant;
  • EINECS: 217-992-8
  • Molecular Weight: 144.12532
  • InchiKey: GXHFUVWIGNLZSC-UHFFFAOYSA-N
  • InChI: InChI=1S/C6H8O4/c1-6(2)9-4(7)3-5(8)10-6/h3H2,1-2H3
  • Risk Statements: S24/25;S37/39
  • Molecular Formula: C6H8O4
  • Molecular Structure:CAS No:2033-24-1 2,2-dimethyl-1,3-dioxane-4,6-dione

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2033-24-1 Isopropylidene malonate, 98%

  • Isopropylidene malonate, 98%
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References of 2,2-dimethyl-1,3-dioxane-4,6-dione
Title: Meldrum's Acid
CAS Registry Number: 2033-24-1
CAS Name: 2,2-Dimethyl-1,3-dioxane-4,6-dione
Synonyms: malonic acid cyclic isopropylidene ester; isopropylidene malonate; 2,2-dimethyl-4,6-diketo-1,3-dioxane
Molecular Formula: C6H8O4
Molecular Weight: 144.13
Percent Composition: C 50.00%, H 5.59%, O 44.40%
Literature References: Prepd from malonic acid and acetone in the presence of acetic anhydride: Meldrum, J. Chem. Soc. 93, 598 (1908). Prepn and structure: Davidson, Bernhard, J. Am. Chem. Soc. 70, 3426 (1948); P. Schuster et al., Monatsh. Chem. 95, 53 (1964); G. H. Bihlmayer et al., ibid. 98, 564 (1967). Review: H. McNab, Chem. Soc. Rev. 7, 345-358 (1978).
Properties: Crystals from acetone + water, dec 94-95°. pKa 5.1.
pKa: pKa 5.1
Use: In organic synthesis as a substitute for acyclic malonic esters and generally as a C3O2 synthon.