## Abstract Several immobilized benzo‐18‐crown‐6 derivatives have been synthesized and a study has been made of their activities as triphase catalysts in the reaction between 1‐bromooctane in toluene and aqueous potassium cyanide. In each case the reaction rate was proportional to the 1‐bromooctane
Heterogeneous catalysis for the acetylation of benzo crown ethers
✍ Scribed by K. Biró; S. Békássy; B. Ágai; F. Figueras
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 204 KB
- Volume
- 151
- Category
- Article
- ISSN
- 1381-1169
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The sulfuric acid-promoted reaction of benzo-15-crown-5 O) and benzo-18-crown-6 (6) with aliphatic aldehydes, leading to the formation of anthracene crown et~rs, was studied. A substantial substiment effect on the reaction comse was found. For the isdmtyi group the highest yield was obtained, while
The Synthesis of Anthracene Crown Ethers Derived from Benzo-Crown Ethers. -A method to obtain anthracene crown ethers starting from benzo-15-crown-5-ether and benzo-18-crown-6-ether and various aldehydes is described. The yield strictly depends on the aldehyde. Cyclohexanone leads to a new class of