The first synthesis of uracil based calix[4]arene derivatives
โ Scribed by Subodh Kumar; Dharam Paul; Harjit Singh
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- French
- Weight
- 105 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
The newly synthesized uracil based calixl4]arenes (4) possess anticonfiguration (IH nmr and energy minimization), where the substituents (R0 on aryl ring between N~-positions of uracil face the n-cloud of the ring between N3-positions.
๐ SIMILAR VOLUMES
## Abstract The synthesis of two new flavin substituted calix[4]arene derivatives, **9** and **10**, is described. The first flavin substituted calix[4]arene derivative **9** was synthesized by the reaction of 3โmethylalloxazine (**5**) with 25,27โbis(3โbromopropoxy)โ26,28โdihydroxyโ5,11,17,23โtetr
## Abstract The new chromophore compounds with NLO properties were prepared by Knoevenagel condensation from formyl or diformyl calix[4]arene and isophorone derivatives in the presence of piperidine and acetic acid, respectively. In these chromophore calix[4]arenes, the ring locked trienes were emp