2-Fluorobenzoyl chloride → 90183-00-9

HRID 364635Notes

Reaction equation

HRID 364635 reaction equation
[NH2:1][CH:2]1[CH:7]2[CH2:8][CH2:9][N:4]([CH2:5][CH2:6]2)[CH2:3]1.[F:10][C:11]1[CH:19]=[CH:18][CH:17]=[CH:16][C:12]=1[C:13]([Cl:15])=[O:14].[OH-].[NH4+].[OH-].[Na+]>CCOCC.CO.O>[ClH:15].[N:4]12[CH2:9][CH2:8][CH:7]([CH2:6][CH2:5]1)[CH:2]([NH:1][C:13](=[O:14])[C:12]1[CH:16]=[CH:17][CH:18]=[CH:19][C:11]=1[F:10])[CH2:3]2

Participants

8

Reactant 4

HCID 98082-Fluorobenzoyl chlorideHCID 14798Sodium HydroxideHCID 14923Ammonium HydroxideHCID 1232383-Aminoquinuclidine2×

Product 1

HCID 2483427690183-00-9Yield 64.4%

Reagents, catalysts & solvents 3

HCID 887MethanolSolventHCID 962WaterSolventHCID 3283Diethyl EtherSolvent2×

Procedure

In a closed system, a solution of 3-aminoquinuclidine (2.52 g, 0.020 mole) in 10 ml anhydrous ether was added dropwise to a stirred solution of 2-fluorobenzoyl chloride (3.13 g, 0.020 mole) in 100 ml anhydrous ether. After the addition was complete, the mixture was stirred another hour and the solid product (as the hydrochloride salt) was collected by filtration under nitrogen to give 4.75 g (84%). TLC analysis (3% conc. ammonium hydroxide in methanol) showed the presence of 3-aminoquinuclidine. The salt was dissolved in 10 ml water, basified with 6N sodium hydroxide solution, and extracted three times with 50 ml portions of methylene chloride. The combined extract was dried over magnesium sulfate and concentrated to give 3.67 g of the product as the free base. Recrystallization from tolueneisooctane gave 2.33 g of a white solid (some toluene insoluble material was removed by decanting the hot toluene solution). The solid free base was dissolved in 10 ml methanol, treated with excess ethereal hydrogen chloride and 100 ml isopropyl ether was added. The salt separated from solution as an oil, but crystallized on trituration. The white solid was collected under nitrogen to give 2.60 g; m.p. 233°-234° C. Mass spectrum (E.I.) m/e (% relative intensity): 248 (15), 125 (13), 123 (100), 109 (80), 96 (24), 95 (45), 84 (14), 75 (19), 70 (64), 42 (44), 41 (18).

Workup

  1. additionAfter the addition
  2. filtrationthe solid product (as the hydrochloride salt) was collected by filtration under nitrogen
  3. customto give 4.75 g (84%)
  4. extractionextracted three times with 50 ml portions of methylene chloride
  5. extractionThe combined extract
  6. dry with materialwas dried over magnesium sulfate
  7. concentrationconcentrated

Sources & evidence

ORD record
ord-7291cf0319a74ede9de43e6341612a7d
Source dataset
uspto-grants-1986_08
Patent number
US04605652

Reaction notes

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