Methyl Methacrylate → Methyl 2-methylprop-2-enoate;styrene

HRID 987155Notes

Reaction equation

HRID 987155 reaction equation
[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.C=CC=C.[C:13]([O:18][CH3:19])(=[O:17])[C:14]([CH3:16])=[CH2:15].C([Al](CC(C)C)OC1C(C(C)(C)C)=CC(C)=CC=1C(C)(C)C)C(C)C>>[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[C:13]([O:18][CH3:19])(=[O:17])[C:14]([CH3:16])=[CH2:15]

Participants

5

Reactant 4

HCID 6658Methyl Methacrylate3×HCID 7501StyreneHCID 78451,3-ButadieneHCID 16687297Diisobutyl(2,6-di-tert-butyl-4-methylphenoxy)aluminum

Product 1

HCID 159984Methyl 2-methylprop-2-enoate;styrene

Procedure

Preparation of polystyryllithium by anionic polymerization of styrene, preparation of a polymerization initiator compound by addition reaction of butadiene, and polymerization of methyl methacrylate in the presence of an organoaluminum compound were successively performed in the same way as in Example 2 except that the temperature when diisobutyl(2,6-di-tert-butyl-4-methylphenoxy)aluminum was added, the temperature when methyl methacrylate was added, and polymerization temperature were changed from −30° C. to 0° C. and the time for polymerization of methyl methacrylate was changed from 2 hours to 1 hour.

Workup

  1. customPreparation of polystyryllithium
  2. additionwas added
  3. custompolymerization temperature
  4. customwere changed from −30° C. to 0° C.
  5. waitwas changed from 2 hours to 1 hour

Sources & evidence

ORD record
ord-22c72ab41f3c4b448072d2ed93f39fca
Source dataset
uspto-grants-2003_10
Patent number
US06630554B1

Reaction notes

Loading…