Phenaglycodol

Last updated
Phenaglycodol
Phenaglycodol.svg
Clinical data
ATC code
  • None
Legal status
Legal status
Identifiers
  • 2-(4-chlorophenyl)-3-methyl-2,3-butanediol
CAS Number
PubChem CID
ChemSpider
UNII
CompTox Dashboard (EPA)
ECHA InfoCard 100.001.124 OOjs UI icon edit-ltr-progressive.svg
Chemical and physical data
Formula C11H15ClO2
Molar mass 214.69 g·mol−1
3D model (JSmol)
  • CC(C)(C(C)(c1ccc(cc1)Cl)O)O
  • InChI=1S/C11H15ClO2/c1-10(2,13)11(3,14)8-4-6-9(12)7-5-8/h4-7,13-14H,1-3H3
  • Key:HTYIXCKSEQQCJO-UHFFFAOYSA-N

Phenaglycodol (brand names Acalmid, Acalo, Alterton, Atadiol, Felixyn, Neotran, Pausital, Remin, Sedapsin, Sinforil, Stesil, Ultran) [2] is a drug described as a tranquilizer or sedative which has anxiolytic and anticonvulsant properties. [3] [4] It is related pharmacologically to meprobamate, though it is not a carbamate. [5] [6]

Contents

Synthesis

Patents: Phenaglycodol synthesis.svg
Patents:

p-Chloroacetophenone and NaCN are reacted together to give the corresponding cyanohydrin (cf Strecker synthesis), CID:12439573. The cyano group is then hydrated in acid to the corresponding amide, p-chloroatrolactamide, CID:15255544 (4). The amide group is then further hydrolyzed with a 2nd equivalent of water in concentrated lye to p-chloroatrolactic acid, [4445-13-0] (5). Esterification to Ethyl p-chloroatrolactate [100126-96-3](6). Finally, nucleophilic addition a couple of equivalents of MeMgI are added to the ester give Phenaglycodol (7) crystals.

40% one-step method: Phenaglycodol synthesis2.svg
40% one-step method:

A mixed Pinacol coupling rxn between 4-chloroacetophenone [99-91-2] and acetone with magnesium activated with a small amount of trimethylsilyl chloride gave a 40% yield of phenglycodol.

Notes

See also

Related Research Articles

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References

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