An efficient synthesis of imidodicarbonic diamides from 1,3-thiazetidin-2-ones with NH2OH·HCl via ring-opening reaction
A ring-opening process of 4-imino-1,3-thiazetidin-2-ones with NH2OH·HCl was described for the first time. Two different scaffolds of imidodicarbonic diamide were obtained selectively in good yields in the presence of organic base. The obtained imidodicarbonic diamides were demonstrated by X-ray diffraction analysis.
Novel synthesis of 2,4-dihydro-5-amino[1,2,4]triazol-3-ones from 1,3-disubstituted thioureas
A facile two-step synthesis of 2,4-dihydro-5-amino-[1,2,4]triazol-3-ones is described. Firstly, 1,3-disubstituted thioureas reacted with bis(trichloromethyl) carbonate (BTC) in the presence of a base such as NaHCO3 to form the intermediate 4-(a
Jin, Can,Liu, Chuangwei,Su, Weike
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p. 607 - 610
(2009/07/01)
Neuer Zugang zu 1,3-Thiazetinen
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Tittelbach, Franz,Seeboth, Helmut
p. 142 - 143
(2007/10/02)
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