Microwave-assisted synthesis of new optically active poly(ester-imide)s containing N,N′-(pyromellitoyl)-bis-L-phenylalanine moieties
✍ Scribed by Shadpour E. Mallakpour; Abdol-Reza Hajipour; Sakineh Habibi
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 93 KB
- Volume
- 86
- Category
- Article
- ISSN
- 0021-8995
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📜 SIMILAR VOLUMES
## Abstract Five new poly(amide‐imide)s **8a–e** were synthesized through the direct polycondensation reaction of five chiral __N__,__N__′‐(pyromellitoyl)‐bis‐L‐amino acids **3a–e** with 1,3‐bis(4‐aminophenoxy) propane **7** in a medium consisting of __N__‐methyl‐2‐pyrrolidone, triphenyl phosfite,
## Abstract EPICLON [3a,4,5,7a‐Tetrahydro‐7‐methyl‐5‐(tetrahydro‐2,5‐dioxo‐3‐furanyl)‐1,3‐isobenzofurandione] or [5‐(2,5‐dioxotetrahydrofurfuryl)‐3‐methyl‐3‐cyclohexyl‐1,2‐dicarboxylic acid anhydride] (**1**) was reacted with L‐phenylalanine (**2**) in acetic acid, and the resulting amic acid was r