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200517.fm Page 195 Friday, March 18, 2005 2:52 PM
2005
Multi-membered O,N,S-heterocycles
R 0692
Multicomponent Heterocyclization of Hydrazine, Hydrogen Sulfide, and Form— The multicomponent reaction of hydrazine with hydrogen sulfide and
17- 176 aldehyde.
formaldehyde provides previously unknown bi-, tri- and tetracyclic nitrogen- and sulfur-containing heterocycles of unique structures, which are of interest as selective complexones and biologically active substances. The direction and selectivity of the reaction is substantially affected by the temperature. — (KHAFIZOVA, S. R.;
AKHMETOVA*, V. R.; TYUMKINA, T. V.; KHALILOV, L. M.; KUNAKOVA, R. V.;
DZHEMILEV, U. M.; Russ. Chem. Bull. 53 (2004) 8, 1717-1721; Inst. Petrochem.
Catal., Bashkortostan Rep. Acad. Sci., Ufa 450075, Russia; Eng.) — C. Hettrich
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