Reference

Reaction of sodium azide with iodine induced by mercaptopyrimidines and its use in analytical chemistry

Reaction of sodium azide with iodine induced by mercaptopyrimidines and its use in analytical chemistry. Kurzawa, Jan (Inst. Chem. Podstawowej, Politech. Poznanska, Poznan, Pol.). Chem. 26628-22-8 and 1450-85-7 are cas registry numbers. These chemicals are also mentioned in this article. Inz. Chem., 16, 41-57 (Polish) 1986. CODEN: ZPPCDO. ISSN: 0137-6896. DOCUMENT TYPE: Journal; General Review CA Section: 80 (Organic Analytical Chemistry) A survey is presented of the uninduced reaction of NaN3 with I, reaction of 2-mercaptopyrimidine with I, and the I-azide reaction induced by mercaptopyrimidines. The use of the induced I-azine reaction for the detn. of micro- and nanogram amts. of mercaptopyrimidines by 3 anal. techniques: back-titrn. of unreacted I from the sample, automatic titrn. of the sample with I soln., and by flow injection anal. is described. .

The mass spectra of pyrimidines

The mass spectra of pyrimidines. II. 2(1H)-Pyrimidinethiones and some N(1)-substituted derivatives. Rye, Robin T. B.; Tee, Oswald S.; Kazdan, Eva M. (Dep. Chem., Concordia Univ., Montreal, PQ H3G 1M8, Can.). Can. J. Chem., 62(11), 2340-3 (English) 1984. CODEN: CJCHAG. ISSN: 0008-4042. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) The electron ionization induced fragmentation of 2(1H)-pyrimidinethione (I), some N(1)-substituted derivs., and 2(1H)-pyrimidineselenone (II) have been studied. Principal fragmentation pathways have been identified using 2H-labeling, metastable defocussing, and exact mass measurements. The fragmentations of I and II generally parallel those reported for 2(1H)-pyrimidinone. In contrast to the oxo-compd., however, direct expulsion of the exocyclic hetero atom is significant in the fragmentation of I, and dominates the spectrum of II. There are some commonly used reagents like 1450-85-7 in this article. Based on metastable peak abundances and kinetic energy release measurements, it is postulated that the [M - H]+ entity generated from N-ethyl-2-pyrimidinethione has a thiazolinium structure. .