Reacción #454159

Ecuación de reacción

azobisisobutyronitrile

maleic anhydride

2-hydroxyethyl 5-norbornene-2-carboxylate

t-butyl 5-norbornene-2-carboxylate

5-norbornene 2-carboxylic acid

formula IX

5-norbornene 2-carboxylic acid

→

2-hydroxyethyl 5-norbornene-2-carboxylate t-butyl 5-norbornene-2-carboxylate 5-norbornene 2-carboxylic acid maleic anhydride

Disolventes

toluene

tetrahydrofuran

Condiciones de reacción

Tratamiento posterior

1. 1
   workup.DISSOLUTIONThereafter, it was dissolved in a solvent
2. 2
   OtroA radical reaction
3. 3
   OtroThe resin thus produced by this polymerization
4. 4
   Otrowas precipitated in ethyl ether
5. 5
   Secadohexane and dried

Procedimiento

1 mole of maleic anhydride, 0.05-0.8 moles of 2-hydroxyethyl 5-norbornene-2-carboxylate, 0.5-0.95 moles of t-butyl 5-norbornene-2-carboxylate and 0.01 to 0.2 moles of 5-norbornene 2-carboxylic acid (structures of which are shown in formula IX below) were dissolved in tetrahydrofuran or toluene. Thereafter, it was dissolved in a solvent. A radical reaction was executed at a temperature of about 60-70° C. for 4-24 hours under a nitrogen or argon atmosphere in the presence of 0.5-10 g of azobisisobutyronitrile (AIBN), as an initiator. The resin thus produced by this polymerization was precipitated in ethyl ether or hexane and dried to yield poly[2-hydroxyethyl 5-norbornene-2-carboxylate/t-butyl 5-norbornene-2-carboxylate/5-norbornene 2-carboxylic acid/maleic anhydride] resin of the following formula X. ##STR6##

Fuente