Chromogenic aza-12-crown-4 ethers and method of using same for t

Details Chromogenic aza-12-crown-4 ethers and method of using same for t Chromogenic aza-12-crown-4 ethers and method of using same for t

1985-02-04

1987-04-21

Hollrah, Glennon H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Unsubstituted hydrocarbyl chain between the ring and the -c-...

436 74, 436 79, C07D27301

Patent

active

046598154

ABSTRACT:
Chromogenic aza-12-crown-4 ethers which can be used for the spectrophotometric determination of lithium ion in aqueous solutions are disclosed. The compounds of the invention are particularly useful for the analysis of Li.sup.30 in the presence of Na.sup.+, a situation common in biological and geological systems. The compounds [e.g., 1-(2-oxy-5-nitrobenzyl)-1-hydro-1-aza-4,7,10-trioxacylclododecane], their methods of manufacture, and methods of utilizing the compounds for the analysis of lithium are disclosed and claimed.

REFERENCES:
Nakamura et al: Chemistry Letters, "New Photometric Reagents for Metal Ions Based on Crown Ether Complex Formation", (1981) Japan, pp. 1305-1306.
Nakamura et al: Anal. Chem., 001.52 (1980) "Complexation and Extraction Alkai Metal Ions by 4-Picrylaminobenzo-18-Crown-6--Derivatives", pp. 1663-1671.
Lockhart et al, Journ. Anal. Chem. Society, Perkins Trans. I (1973) England, "Preparaton of some Nitrogen-Containing Polyether, Crown Compounds", pp. 577-581.

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