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
Synthesis of crown ethers using the azo coupling reaction
β Scribed by A. V. Sultanov; S. B. Savvin
- Book ID
- 112445603
- Publisher
- Springer
- Year
- 1986
- Tongue
- English
- Weight
- 143 KB
- Volume
- 35
- Category
- Article
- ISSN
- 1573-9171
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Che synthesis and chemistry of macrocyclic polyethers are currently receiving a great deal of attention. Very recently Cram and co-workers 132 have reported the synthesis of two crown ethers (3,~ and QJ). We have prepared two series of novel crown ethers in which respectively, the 1,3and 2,5-positio
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