Maleic Anhydride → 2-Hydroxyethyl oxabicyclo[2,2,1]hept-5-ene-2-carboxylate t-butyl 5-norbornene-2-carboxylate maleic anhydride

Participants

Reaction Steps

2-hydroxyethyl oxabicyclo[2,2,1]hept-5-ene-2-carboxylate (0.15 mol), t-butyl 5-norbornene-2-carboxylate (0.85 mol), and maleic anhydride (1 mol) were dissolved in a tetrahydrofuran solvent. 2,2-azobisisobutyonitrile (5.84 g) was added, and the solution was mixed. The solution was polymerized at a temperature of 67° C. in a nitrogen atmosphere for 10 hours. After the polymerization reaction was completed, the polymer was precipitated in an ethyl ether solvent, then dried in a vacuum to obtain the pure title polymer (63.94 g). (yield: 22%, purity: 99.9%).

Provenance & Evidence