- An Easy Access to Hydrazinocarbonyl Carbamic Acid Ethyl Esters
-
The reaction of carboisocyanatidic acid ethyl ester with hydrazines and 3,5-dioxo-1,2,4-triazolidine is reported. The thermal cyclization of the products to 1-substituted 3,5-dioxo-1,2,4-triazolidines and to [1,2,4]triazolo[1,2-a][1,2,4]triazole-1,3,5,7-tetraone was investigated.
- Faleschini, Gottfried
-
p. 327 - 331
(2007/10/03)
-
- A REINVESTIGATION OF THE REACTIONS BETWEEN DIAZOMETHANE AND 1-PHENYLURAZOLE
-
Exhaustive methylation of 1-phenylurazole (1), using ethereal diazomethane as the methylating agent, results in the formation of three products: 1-phenyl-3,5-dimethoxy-1,2,4-triazole (2), 1-phenyl-3-methoxy-4-methyl-Δ2-1,2,4-triazoline-5-one (3
- Bausch, M. J.,Wang, L.-H.
-
p. 601 - 608
(2007/10/02)
-
- Synthesis of 5-Aryl-3-carbazoyl-1,3,4-oxadiazol-2(3H)-one. Derivatives and their Ring Transformation into 5-Benzamido-1,2,4-triazolidine-3,5-dione Derivatives
-
Some 5-aryl-3-carbazoyl-1,3,4-oxadiazol-2(3H)-one derivatives 6 and 9 have been synthesized in two ways.The expected thermal ring transformation into 2,5-disubstituted 1,3,4-oxadiazoles did not occur but, by acid hydrolysis of 5-aryl-3-3-benzylidene-2-me
- Milcent, Rene,Barbier, Geo,Tzirenstchikow, Tatiana,Lebreton, Luc
-
p. 231 - 236
(2007/10/02)
-
- 4-(2-Fluoro-4-halo-5-substituted phenyl)urazols, and their production and use
-
A condensed phenylurazol of the formula: STR1 wherein X is a chlorine atom or a bromine atom, Y and Z are each an oxygen atom or a sulfur atom and R is a C1 -C3 alkyl group, an allyl group or a propargyl group and n is an integer of 4 or 5, which is useful as a herbicide.
- -
-
-
