Synthesis and cation binding ability of azacrown ethers with phosphine or phosphine oxide side chain

✍ Scribed by György Keglevich; Tibor Novák; Tímea Imre; Péter Bakó; László Tőke; Kálmán Újszászy; Krisztina Ludányi

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 158 KB
• Volume: 10
• Category: Article
• ISSN: 1042-7163
• DOI: 10.1002/(sici)1098-1071(1999)10:7<573::aid-hc10>3.0.co;2-6

✦ Synopsis

The reaction of monoaza-15-crown-5 1 with bromoalkylphosphine oxides 2 and diphenylvinylphosphine oxide led to a new type of lariat ethers (3a-d), one member of which (3a) was deoxygenated to the corresponding phosphine (4). The substituent at the nitrogen atom had a great impact on the extraction ability of the azacrown.