Synthesis of N-cyano monoaza crown ethers
โ Scribed by Hirokazu Maeda; Yohji Nakatsuji; Mitsuo Okahara
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- French
- Weight
- 128 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
โฆ Synopsis
N-Cyan0 monoaza crown ethers were prepared by the reaction of cyanamide with oligoethylene glycol dichlorides or ditosylates in the NaH/DMSO reaction system and led. to the derivatives.
Crown ethers with functional groups such.as hydroxymethyl, 1) bromomethy12)
๐ SIMILAR VOLUMES
## Abstract The Schiff baseโcontaining pendant monoaza crown ether HL^1^, HL^2^, HL^3^ and HL^4^ have been synthesized by condensation of salicylaldehyde with __N__โ(4โaminoaryl) monoaza crown ethers, which were prepared conveniently from 4โnitroโ__N, N__โdi(hydroxyethyl) aniline or 4โnitrobenzyl c
N-Oligoethylene glycol monoaza crown ethers were prepared, and the notable effect of oxyethylene oxygen atoms of the side chain on complexing ability with sodium and potassium cations was confirmed.
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