{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,9]],"date-time":"2025-11-09T07:34:56Z","timestamp":1762673696988,"version":"build-2065373602"},"reference-count":12,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2004,6,30]],"date-time":"2004-06-30T00:00:00Z","timestamp":1088553600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>The reactions of 2-chloropyrimidine with methylamine, ethylamine and piperidine gave the corresponding 2-N-methylamino-, 2-N-ethylamino- and 2N- piperidinopyrimidines, respectively. The fluorescence properties of these alkylamino derivatives in chloroform, ethyl acetate, carbon tetrachloride, acetone, ether, ethanol and methanol were studied. All the alkylamino derivatives showed the highest fluorescence intensity in polar protic solvents; thus 2-N-methylaminopyrimidine (highest fluorescence intensity at 377 nm when excited at 282 nm) and 2-N-ethylaminopyrimidine (highest fluorescence intensity at 375 nm, when excited at 286 nm) showed the highest fluorescence in methanol. In ethanol, 2-N-piperidinopyrimidine showed a fluorescence peak at 403 nm when excited at 360 nm and in chloroform it fluoresced at 392 nm when excited at 356 nm.<\/jats:p>","DOI":"10.3390\/90700520","type":"journal-article","created":{"date-parts":[[2008,10,25]],"date-time":"2008-10-25T13:32:11Z","timestamp":1224941531000},"page":"520-526","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Fluorescence Studies of Selected 2-Alkylaminopyrimidines"],"prefix":"10.3390","volume":"9","author":[{"given":"Z.","family":"Abdullah","sequence":"first","affiliation":[{"name":"Department of Chemistry, Faculty of Science, Univ. of Malaya, 50603, Kuala Lumpur, Malaysia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N. Mohd","family":"Tahir","sequence":"additional","affiliation":[{"name":"Department of Chemical Sciences, Kolej Universiti Sains dan Teknologi, Mengabang Telipot, 21030 Kuala Terengganu, Terengganu, Malaysia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M. R.","family":"Abas","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Faculty of Science, Univ. of Malaya, 50603, Kuala Lumpur, Malaysia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Z.","family":"Aiyub","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Faculty of Science, Univ. of Malaya, 50603, Kuala Lumpur, Malaysia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"B. K.","family":"Low","sequence":"additional","affiliation":[{"name":"Lot 15, Jalan 1B, Kg. Cheras Baru, 56100, Kuala Lumpur, Malaysia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2004,6,30]]},"reference":[{"key":"ref_1","unstructured":"Udenfiend, S. (1962). \u201cFluorescence Assays in Biology and Medicine\u201d, Academic Press."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Wanatabe, Y., and Imai, K. (1983). Anal. Chem., 55, 1786.","DOI":"10.1021\/ac00261a032"},{"key":"ref_3","unstructured":"Abdullah, Z. (,  1990). Proceedings of the 4th National Analytical Chemistry Conference. University Putra Malaysia, Serdang, Selangor, Malaysia."},{"key":"ref_4","unstructured":"Hess, S., and Udenfiend, S. (1959). J. Pharm. Expt. Therapy, 127, 175."},{"key":"ref_5","unstructured":"Udenfiend, S., Weissatch, H., and Clark, C.T. (1965). J. Chem Biol., 215, 33."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Abdullah, Z. (1990). Bull. Kimia, 5, 82.","DOI":"10.1002\/j.1551-8833.1990.tb07037.x"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Lippert, E., Inder, W., and Moll, F. (1959). Spectrochim. Acta, 10, 858.","DOI":"10.1016\/S0371-1951(59)80383-0"},{"key":"ref_8","unstructured":"Abdullah, Z. (1989). [Ph.D. Thesis, Queen Mary & Westfield College, University of London]."},{"key":"ref_9","unstructured":"Low, B.K. (1993). \u201cFluorescence study of pyrimidine derivatives\u201d; BSc. Project Report."},{"key":"ref_10","unstructured":"Abdullah, Z., and Waldron, N.M. (1997). Kimika, 13, 1."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Brown, D.J., and Waring, P. (1974). J. Chem. Soc. Perkin Trans 2, 204.","DOI":"10.1039\/p29740000204"},{"key":"ref_12","unstructured":"(1982). \u201cDictionary of Organic Compounds\u201d, Chapman and Hall."}],"container-title":["Molecules"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1420-3049\/9\/7\/520\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T22:26:05Z","timestamp":1760221565000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1420-3049\/9\/7\/520"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2004,6,30]]},"references-count":12,"journal-issue":{"issue":"7","published-online":{"date-parts":[[2004,7]]}},"alternative-id":["90700520"],"URL":"https:\/\/doi.org\/10.3390\/90700520","relation":{},"ISSN":["1420-3049"],"issn-type":[{"type":"electronic","value":"1420-3049"}],"subject":[],"published":{"date-parts":[[2004,6,30]]}}}