Diethyl Ether → Lytron 810

HRID 649608

Reaction equation

HRID 649608 reaction equation
[C:1]1(=[O:7])[O:6][C:4](=[O:5])[CH:3]=[CH:2]1.[CH3:8][C:9]([C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1)=C.C(OCC)C>C(C(C)=O)C>[CH2:8]=[CH:9][C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1.[CH:2]1[C:1](=[O:7])[O:6][C:4](=[O:5])[CH:3]=1

Participants

5

Reactant 3

HCID 3283Diethyl EtherHCID 7407Alpha-MethylstyreneHCID 7923Maleic Anhydride

Product 1

HCID 62707Lytron 810Yield 45.4%

Reagents, catalysts & solvents 1

HCID 6569Methyl Ethyl KetoneSolvent

Conditions

Temperature
60 °C

Procedure

In 200 ml of methyl ethyl ketone were dissolved 18.14 g of maleic anhydride and 21.86 g of α-methylstyrene, and to the solution was added 1.82 g of azobisisobutylnitrile (AIBN). The resulting mixture was heated at 60° C. for 7 hours under nitrogen atmosphere for performing polymerization. The reaction solution was then dropwise added to 500 ml of ethyl ether under stirring to precipitate a polymer. Thus precipitated polymer was collected by filtration and purified by repeating twice the THF dissolution-ethyl ether precipitation procedure described in Example 1. Thus purified polymer was dried under vacuum at 100° C. for 24 hours to give 17.0 g of a maleic anhydride-styrene copolymer. It was confiremed by elementary analysis that the copolymerization ratio was approximately 1:1. Mn was 11,730.

Workup

  1. custompolymerization
  2. customto precipitate a polymer
  3. filtrationThus precipitated polymer was collected by filtration
  4. custompurified
  5. dissolutionthe THF dissolution-ethyl ether precipitation procedure
  6. customThus purified polymer was dried under vacuum at 100° C. for 24 hours

Sources & evidence

ORD record
ord-62cc2b624ec0476c8a8c832a2bb87f20
Source dataset
uspto-grants-1988_04
Patent number
US04740561

Linked notes

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