84. Experiments on the synthesis of purine nucleosides. Part V. The coupling of pyrimidine derivatives with diazonium salts. A method for the preparation of 5-aminopyrimidines
作者:B. Lythgoe、A. R. Todd、A. Topham
DOI:10.1039/jr9440000315
日期:——
Some Synthetic Analogs of the Natural Purine Nucleosides<sup>1</sup>
作者:John Davoll、Bertram A. Lowy
DOI:10.1021/ja01126a066
日期:1952.3
Purines. II. The Synthesis of Certain Purines and the Cyclization of Several Substituted 4,5-Diaminopyrimidines<sup>1</sup>
作者:Roland K. Robins、K. J. Dille、C. H. Willits、B. E. Christensen
DOI:10.1021/ja01098a003
日期:1953.1
Application of fluorescent triazoles to analytical chemistry. I. Determination of aromatic primary amine with 2,4,6-triaminopyrimidine as a reagent.
作者:SHIGERU NARITA、TAKAYASU KITAGAWA、EIZO HIRAI
DOI:10.1248/cpb.33.4928
日期:——
A sensitive fluorometric method for the determination of primary aromatic amines was developed. The procedure requires diazotization of the amino group followed by coupling with 2, 4, 6-triaminopyrimidine (TAP), and the resulting azo compound is oxidized to a fluorescent triazole. Substituted triazoles were synthesized by using various pyrimidines and their fluorescence characteristics were evaluated. TAP was selected as the most sensitive reagent. None of the pyrimidines substituted at the 2-position was fluorescent. A method for the determination of sulfamethoxazole (SMX) was established (quantitation limit : 40 ng/ml). This method is more practical and simple than that reported before : the final solution for measurement was obtained in one flask through a one-pot reaction. The effects of substituents of the triazole ring on the fluorescence are discussed.