Indene → Indene

HRID 374075Notes

Reaction equation

HRID 374075 reaction equation
[CH2:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[CH:3]=[CH:2]1.C1([C:19]2=[CH:20][C:21]([O:23][C:24]2=[O:25])=[O:22])C2C(=CC=CC=2)C=C1>CCCCCC>[CH2:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[CH:3]=[CH:2]1.[C:21]1(=[O:22])[O:23][C:24](=[O:25])[CH:19]=[CH:20]1

Participants

5

Reactant 2

HCID 7219IndeneHCID 57212560HCID 57212560, compound

Product 2

HCID 7219IndeneHCID 7923Maleic Anhydride

Reagents, catalysts & solvents 1

HCID 8058HexaneSolvent

Procedure

Under agitation with the stirrer, the charge was held at the reflux temperature by heating with an external heater. Thereafter, a solution containing 27 g (0.25 mol) of indene and 410 mg of azoisobutyronitrile (AIBN) as a radical polymerization initiator was charged into the overhead dropping funnel and this solution was dripped slowly into the polymerizer over 1 h. After completion of the dripping, the reaction solution was left under reflux for 2 h until the reaction was completed. The reaction solution was thereafter returned to room temperature and gradually added to 200 ml of n-hexane in a precipitating tank (beaker with an inner capacity of 500 ml), whereupon a white precipitate of indenemaleic anhydride copolymer formed. The precipitate was separated by filtration under suction and vacuum-dried to obtain a copolymer of indene and maleic anhydride in a yield of 95 wt% as calculated from equation (1) given hereinabove.

Workup

  1. temperatureby heating with an external heater
  2. additionwas charged into the overhead
  3. waitAfter completion of the dripping, the reaction solution was left
  4. temperatureunder reflux for 2 h until the reaction
  5. customwas thereafter returned to room temperature
  6. customformed
  7. customThe precipitate was separated by filtration under suction
  8. customvacuum-dried

Sources & evidence

ORD record
ord-98d9915edc38496e928dc12b3ad6b245
Source dataset
uspto-grants-1992_11
Patent number
US05166275

Reaction notes

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