Triethylamine → 4-Acetyl-8-chloro-1,1-dimethyl-1,2,3,4,5,6-hexahydrobenzo[f]quinoline

HRID 1639379Notes

Reaction equation

HRID 1639379 reaction equation
[Cl:1][C:2]1[CH:17]=[CH:16][C:5]2[C:6]3[C:7]([CH3:15])([CH3:14])[CH2:8][CH2:9][NH:10][C:11]=3[CH2:12][CH2:13][C:4]=2[CH:3]=1.C(N(CC)CC)C.[C:25](Br)(=[O:27])[CH3:26]>C(Cl)Cl>[C:25]([N:10]1[C:11]2[CH2:12][CH2:13][C:4]3[CH:3]=[C:2]([Cl:1])[CH:17]=[CH:16][C:5]=3[C:6]=2[C:7]([CH3:14])([CH3:15])[CH2:8][CH2:9]1)(=[O:27])[CH3:26]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 10482Acetyl bromideHCID 198331288-Chloro-1,1-dimethyl-1,2,3,4,5,6-hexahydrobenzo[f]quinoline

Product 1

HCID 198331574-Acetyl-8-chloro-1,1-dimethyl-1,2,3,4,5,6-hexahydrobenzo[f]quinoline

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

10.6 g (0.043 mol) of 8-chloro-1,1-dimethyl-1,2,3,4,5,6-hexahydrobenzo[f]quinoline and 6.6 ml (0.047 mol) of triethylamine are dissolved in 100 ml of methylene chloride and 3.5 ml (0.047 mol) of acetyl bromide dissolved in 20 ml of methylene chloride are added dropwise thereto at 0°. After stirring for 1 hour, the mixture is extracted with methylene chloride/water, dried with magnesium sulfate and the solvent is distilled in a vacuum. Recrystallization from methylene chloride/hexane gives 4-acetyl-8-chloro-1,1-dimethyl-1,2,3,4,5,6-hexahydrobenzo[f]quinoline as white crystals with melting point 126°-127°.

Workup

  1. additionare added dropwise
  2. customat 0°
  3. extractionthe mixture is extracted with methylene chloride/water
  4. dry with materialdried with magnesium sulfate
  5. distillationthe solvent is distilled in a vacuum
  6. customRecrystallization from methylene chloride/hexane

Sources & evidence

ORD record
ord-46f97af6a566466b93d3f09a2110e922
Source dataset
uspto-grants-1989_11
Patent number
US04883815

Reaction notes

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