Carbromal

Carbromal
Names
IUPAC name
2-Bromo-N-carbamoyl-2-ethylbutanamide
Identifiers
77-65-6 YesY
3D model (Jmol) Interactive image
Interactive image
ChEMBL ChEMBL1697828 YesY
ChemSpider 6243 YesY
ECHA InfoCard 100.000.952
EC Number 201-046-6
KEGG D02619 YesY
MeSH carbromal
PubChem 6488
UNII 0Y299JY9V3 YesY
Properties
C7H13BrN2O2
Molar mass 237.10 g·mol−1
Appearance White crystals
Odor Odourless
Density 1.544 g/cm3
Melting point 119 °C (246 °F; 392 K)
Soluble
Solubility soluble in chloroform, ether, acetone, benzene
log P 1.623
Acidity (pKa) 10.69
Basicity (pKb) 3.31
Structure
rhombic
Pharmacology
N05CM04 (WHO)
Related compounds
Related ureas
Bromisoval
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Carbromal is a hypnotic/sedative originally synthesized in 1909 by Bayer.[1]

Synthesis

Carbromal synthesis: DE 225710  (1910);[2][3] Patent literature:[4][5]

Diethylmalonic acid is decarboxylated to 2-ethylvaleric acid then converted via a Hell-Volhard-Zelinsky reaction to α-bromo-α-ethylbutyryl bromide. Reaction with urea with affords carbromal (4).

See also

References

  1. DE 225710
  2. Frdl. 10, 1160
  3. Chem. Zentralbl. 1910, II, 1008.
  4. Slotta, Grundriss der modernen Arzneistoff-Synthese (Stuttgart, 1931)
  5. H. P. Kaufmann, Arzneimittel-Synthese (Berlin, 1953).



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