## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v
Synthesis and characterization of novel formazans and their metal complex dyes containing crown ether moieties
✍ Scribed by Yaşar Gök; H.Basri Şentürk
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 519 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0143-7208
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## Abstract A new type of crown ethers containing a diphenyl ether unit has been prepared, the ring size ranging from 12 to 36. ^1^H and ^13^C NMR spectra of both free ligands and their metal‐ion complexes have been recorded. For 18‐ and 21‐membered compounds a general downfield shift was observed
## Abstract The synthesis of a novel chloro monomer containing the 1,2‐dibenzoylbenzene moiety was described. The chloro monomer was reacted with 4‐(4‐hydroxyphenyl)‐1(2__H__)‐phthalazinone compound in the presence of excess anhydrous potassium carbonate in an aprotic solvent (Sulfolane), and high