2,4-dichloromethyl-1,5-diphenoxy-3-thiapentane in the synthesis of oxathiane crown ethers
β Scribed by A. Yu. Arkhipov; A. V. Anisimov
- Book ID
- 105103374
- Publisher
- Springer US
- Year
- 1995
- Tongue
- English
- Weight
- 88 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0009-3122
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π SIMILAR VOLUMES
## 3,5-diones The photoaddition of 4-methyl-1,2,4-triazoline-3,5-dione (4-MTAD) with a wide variety of acyclic, cyclic and crown aliphatic ethers has been investigated. Monochromatic (Ξ» = 514.5 nm) or polychromatic (Ξ» Υ 310 nm) irradiations give identical mono-urazolyl ethers as reaction products.
## Abstract Syntheses of 1,3β2,4βcalix[4]bisβcrown ethers (**1** and **2**) fixed in the 1,3βalternate conformation by 1,3β and 2,4βbridges made of two modified polyether chains each containing two 1,2βphenylene residues and one pyridine or anisyl unit are reported. The structures of compounds **1*