Reaktion #501853

Reaktionsgleichung

magnesium

butane

2-methyl-1-pentanol

iodine crystals

2-methyl-1-pentanol

2-methyl-1 -pentanol

2-methyl-1-pentanol

BuMgCl

→

2-Methylpentyloxymagnesium Chloride

Lösungsmittel

n-butyl chloride

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigewas placed in a 3-necked 3 liter reactor flask, along with 1600 ml of isoparaffinic solvent (Isopar E)
2. 2
   TemperaturThis mixture was heated under an argon atmosphere
3. 3
   Temperaturto reflux temperature for about 60 minutes for metal activation
4. 4
   Sonstigereaction
5. 5
   Temperaturat reflux temperature
6. 6
   workup.ADDITIONwas added
7. 7
   workup.DISTILLATIONButane was distilled off
8. 8
   Temperaturthrough reflux condensor
9. 9
   Temperaturto maintain the reaction temperature
10. 10
    Sonstigeclose to the reflux temperature of solvent Isopar E
11. 11
    workup.WAITThe reaction was continued for two hours
12. 12
    FiltrationThe slurry was filtered while hot, 90°-100° C
13. 13
    workup.WAITcomplete in about 10-15 minutes
14. 14
    Sonstigewere collected on the filter
15. 15
    Einengen0.435 molar magnesium concentration with 91.40+% magnesium recovery
16. 16
    Sonstigeto be stable at 0° to 40° C. on storage

Vorschrift

Following the procedure of Example 1, 24.31 gm of magnesium metal powder (1.0 mole) was placed in a 3-necked 3 liter reactor flask, along with 1600 ml of isoparaffinic solvent (Isopar E) having a boiling range of 116°-139° C. and 0.25 gm of iodine crystals. This mixture was heated under an argon atmosphere to reflux temperature for about 60 minutes for metal activation. 105 ml of n-butyl chloride (1.OM) was then gradually added to the reaction slurry in 40 minutes, then reaction was continued for two hours at reflux temperature. Addition of 180 ml (1.4 moles) of 2-methyl-1-pentanol to the reaction slurry was started. The reaction slurry became thick and viscous at reflux temperatures when 60 ml of the 180 ml of the 2-methyl-1-pentanol was added. At this point the reaction slurry was cooled down to 65° C. At 65° C. the remaining 120 ml of 2-methyl-1 -pentanol was added along with 400 ml of solvent (Isopar E) with good agitation to reduce the viscosity of the slurry. The 2-methyl-1-pentanol reacted with BuMgCl as was evidenced by the release of butane. Butane was distilled off through reflux condensor to maintain the reaction temperature close to the reflux temperature of solvent Isopar E. The reaction was continued for two hours. The slurry was filtered while hot, 90°-100° C. The filtration rate was fast and complete in about 10-15 minutes. Final volume of filtrate was about 2100 ml. Fine gray suspended particles as solid were collected on the filter. The clear filtrate was analyzed and found to have 0.435 molar magnesium concentration with 91.40+% magnesium recovery. This filtrate was found to be stable at 0° to 40° C. on storage.

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