Ethanol → Benzophenone
Reaktionsgleichung
[CH:1]1[C:6]([C:7]([C:9]2[CH:14]=[CH:13][C:12]3C(OC(=O)[C:11]=3[CH:10]=2)=O)=[O:8])=[CH:5][C:4]2C(OC(=O)[C:3]=2[CH:2]=1)=O.C(O)C>CN1CCCC1=O>[C:7]([C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1)(=[O:8])[C:6]1[CH:1]=[CH:2][CH:3]=[CH:4][CH:5]=1Komponenten
4
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
32.21 Gram of 3,3',4,4'-benzophenonetetracarboxylic dianhydride in 69.1 g of N-methyl-2-pyrrolidone was heated to 80° C., and 9.21 g of ethanol was added and reacted at 100° C. for 2 hr to form a solution of benzophenone-tetracarboxylic ester. To this solution was added 20.01 g of 4,4'-diaminodiphenyl ether and reacted at 80° C. for 3 hr. The thus obtained solution of poly(amic acid) ester oligomer was found to have a viscosity of 2 poises at 25° C.