Synthesis of optically active poly(amide-imide)s derived from N,N′-(4,4′-carbonyldiphthaloyl)-bis-L-leucine diacid chloride and aromatic diamines by microwave radiation
✍ Scribed by Shadpour E. Mallakpour; Abdol-Reza Hajipour; Mohammad Reza Zamanlou
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 242 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0887-624X
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📜 SIMILAR VOLUMES
## Abstract 3,3′,4,4′‐Diphenylsulfonetetracarboxylic dianhydride (**1**) was reacted with __L__‐leucine (**2**) in acetic acid and the resulting imide‐acid (**3**) was obtained in high yield. The diacid chloride (**4**) was prepared from diacid derivative (**3**) by reaction with thionyl chloride.
## 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‐isoleucine (2) in acetic acid and the resulting imide acid (3) was obtained