Iodine → HCID 178445097, compound

Temperature

65 °C

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.

1. customwas placed in a 3-necked 3 liter reactor flask, along with 1600 ml of isoparaffinic solvent (Isopar E)
2. temperatureThis mixture was heated under an argon atmosphere
3. temperatureto reflux temperature for about 60 minutes for metal activation
4. customreaction
5. temperatureat reflux temperature
6. additionwas added
7. distillationButane was distilled off
8. temperaturethrough reflux condensor
9. temperatureto maintain the reaction temperature
10. customclose to the reflux temperature of solvent Isopar E
11. waitThe reaction was continued for two hours
12. filtrationThe slurry was filtered while hot, 90°-100° C
13. waitcomplete in about 10-15 minutes
14. customwere collected on the filter
15. concentration0.435 molar magnesium concentration with 91.40+% magnesium recovery
16. customto be stable at 0° to 40° C. on storage

ORD record

ord-51dc0e09e50c4eb0812f76ad36f1392f

Source dataset

uspto-grants-1988_12

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US04792640