1-Bromopropane → HCID 57489118, compound

HRID 1863444Notes

Reaction equation

HRID 1863444 reaction equation
[F:1][C:2]1[CH:19]=[CH:18][CH:17]=[CH:16][C:3]=1[CH2:4][N:5]1[CH:9]=[CH:8][CH:7]=[C:6]1[C:10](=[O:15])[CH2:11][N:12]([CH3:14])[CH3:13].[CH2:20]([Mg]Br)[CH2:21][CH3:22].[Mg].C(Br)CC.[Cl-].[NH4+].[OH-].[Mg+2].[OH-]>CCOCC>[CH3:13][N:12]([CH3:14])[CH2:11][C:10]([C:6]1[N:5]([CH2:4][C:3]2[CH:16]=[CH:17][CH:18]=[CH:19][C:2]=2[F:1])[CH:9]=[CH:8][CH:7]=1)([OH:15])[CH2:20][CH2:21][CH3:22]

Participants

8

Reactant 6

HCID 78401-BromopropaneHCID 25517Ammonium ChlorideHCID 73981Magnesium HydroxideHCID 5462224MagnesiumHCID 20391526HCID 20391526, compoundHCID 178455851HCID 178455851, compound

Product 1

HCID 57489118HCID 57489118, compound

Reagents, catalysts & solvents 1

HCID 3283Diethyl EtherSolvent

Procedure

A solution of 11.0 g of 1-(o-fluorobenzyl)-2-(dimethylaminoacetyl)pyrrole, free base of Example 3a, in ether is added dropwise to a stirring solution of n-propylmagnesium bromide which is prepared from 1.67 g of magnesium turnings and 8.4 g of n-propylbromide. The mixture is refluxed for 4 hours, allowed to cool, hydrolized with ice-water and treated with concentrated ammonium chloride solution to dissolve the magnesium hydroxide precipitate. The organic phase is separated and the aqueous phase extracted with ether and the organic phases are combined, washed with a 5% sodium bicarbonate solution and water and dried. Removal of the ether leaves a crude yellow oil which is distilled at 133°-137° C./0.08 mm gives a light yellow oil of 1-(dimethylamino)-2-[1-(o-fluorobenzyl)-2-pyrryl]-2-hydroxypentane.

Workup

  1. temperatureThe mixture is refluxed for 4 hours
  2. customThe organic phase is separated
  3. extractionthe aqueous phase extracted with ether
  4. washwashed with a 5% sodium bicarbonate solution and water
  5. customdried
  6. customRemoval of the ether
  7. customleaves a crude yellow oil which
  8. distillationis distilled at 133°-137° C./0.08 mm

Sources & evidence

ORD record
ord-59e57a2b0377448cbe71e445d018e065
Source dataset
uspto-grants-1979_09
Patent number
US04169094

Reaction notes

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