1,1-Bis[4-(4-aminophenoxy)phenyl]-1-phenylethane (BAPPE) was prepared through nucleophilic substitution reaction of 1,1-bis(4-hydroxyphenyl)-1-phenylethane and p-chloronitrobenzene in the presence of K 2 CO 3 in N,N-dimethylformamide, followed by catalytic reduction with hydrazine and Pd/C. Novel or
Preparation and characterization of organosoluble polyimides based on 1,1-bis[4-(3,4-aminophenoxy)phenyl]cyclohexane and commercial aromatic dianhydrides
β Scribed by Chin-Ping Yang; Ruei-Shin Chen; Chien-Wen Yu
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 161 KB
- Volume
- 82
- Category
- Article
- ISSN
- 0021-8995
- DOI
- 10.1002/app.2128
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A series of copolyimides (co-PIs) with high molecular weights, excellent mechanical properties, heat-resistant properties, and good solubilities in organic solvents were synthesized from six kinds of commercial dianhydrides (IIa-f) and 1,4-bis(4aminophenoxy)-2-tert-butylbenzene (I). Monomers (IIa-d)
## Abstract A new kind of pyridineβcontaining aromatic diamine monomer, 4βphenylβ2,6βbis[4β(4βaminophenoxy)phenyl]βpyridine (PAPP), was successfully synthesized by a modified chichibabin reaction of benzaldehyde and a substituted acetophenone, 4β(4βnitrophenoxy)βacetophenone (NPAP), followed by a r