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Isoureas 1.2.4- thiadiazoles, 5-amino

A -Chloro derivatives of amidines, isoureas and guanidines react with potassium 5-methyl-cyanodithioiminocarbonate (266) to yield 2,5-substituted 3-amino-1,2,4-thiadiazoles (Equation (37))... [Pg.342]

V-Chloro derivatives of amidines, isoureas and guanidines react with potassium 5-methyl cyanodithioiminocarbonate (320 R = Me) to yield thiadiazole systems of type (324 Scheme 114) (75BCJ310 73CL917). A related transformation occurs when the cyanothioiminocarbon-ates (322) and chloramine are allowed to condense at low temperature (76EGP119791). In this manner a variety of 5-substituted 3-amino-l,2,4-thiadiazoles (325) are obtained in good yields (Scheme 115). The use of ethoxycarbonylthioiminocarbonates (326) in this... [Pg.498]

Amino-l,2,4-thiadiazoles from isothiocyanates and isoureas via thioiso-biurets s. 14, 374... [Pg.124]

See other pages where Isoureas 1.2.4- thiadiazoles, 5-amino is mentioned: [Pg.136]    [Pg.498]    [Pg.509]   
See also in sourсe #XX -- [ Pg.14 , Pg.14 , Pg.37 , Pg.374 ]



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