Carbromal is a hypnotic/sedative originally synthesized in 1909 by Bayer and subsequently marketed as Adalin.[1][2] The drug was later sold by Parke-Davis in combination with pentobarbital, under the name Carbrital.[3]

Synthesis

Carbromal synthesis:[2][4][5] Patent literature:[6][7]

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. ^ Borrie P (March 1955). "A purpuric drug eruption caused by carbromal". British Medical Journal. 1 (4914): 645–6. doi:10.1136/bmj.1.4914.645. PMC 2061381. PMID 13230580.
  2. ^ a b DE 22571, "Verfahren dur Darstellung von Bromodiäthylacetylharnstoff [Method for the preparation of bromodiethylacetylurea]", published 1910-09-17, assigned to Friedrich Bayer & Co. 
  3. ^ Physicians' Desk Reference (33 ed.). Oradell, N.J.: Medical Economics Co. 1979. p. 1266. ISBN 0-87489-999-0. OCLC 4636066.
  4. ^ Frdl. 10, 1160
  5. ^ Chem. Zentralbl. 1910, II, 1008.
  6. ^ Slotta H (1931). Bauer KH (ed.). Grundriss der modernen Arzneistoff‐Synthese. Stuttgart: Verlag Ferd. Enke.
  7. ^ H. P. Kaufmann, Arzneimittel-Synthese (Berlin, 1953).