Carbonohydrazides

The N-substituted 4-amino-3,5-dione (710) was obtained when the carbonohydrazide derivative (709) was treated with a base (03CB3877). In another base-induced cyclization,... 

Keywords diaryl carbonohydrazide, K3Fe(CN)6, diaryl carbazone... 

SYNS 4-AMINOSEMICARBAZIDE CARBAZIC ACID HYDRAZIDE CARBAZIDE CARBODIHYDRAZIDE CARBONIC ACID DIHYDRAZIDE CARBONIC DIHYDRAZIDE CARBONOHYDRAZIDE CARBONYLDIHYDRAZINE 1,3-DIAMINOUREA... 

CARBONOCHLORIDIC ACID, 2,4,6-TRICHLOROPHENYL ESTER (9C1) see TIY800 CARBONOHYDRAZIDE see CBS500 CARBONOHYDRAZONIC DIHYDRAZIDE, MONONITRATE (9CI) see THN800 CARBON OIL see BBL250 CARBONOTHIOIC ACID, S,S -2,3-QUINOXALINEDIYL o,o -DIMETHYL ESTER see BHL800... 

Monohydrazones 9, derived from carbonohydrazide and monocarbonyl compounds, exist in solution as tautomeric mixtures of the /Z-hydrazone 9 and hexahydro-1,2,4,5-tetrazine forms 10 (Scheme 2) <1999RJ0357>. 

Carbonodithioic acid, O-(l-methylpropyl) ester, sodium salt. See Sodium s-butyl xanthate Carbonodithioic acid, 0-(2-methylpropyl) ester, sodium salt. See Sodium Isobutyl xanthate Carbonodithioic acid, 0-pentyl ester, potassium salt. See Potassium amyl xanthate Carbonohydrazide. See Carbohydrazide Carbon oil. See Benzene Carbonoperoxoic acid, 00-(1,1-dimethylethyl) O-(l-methylethyl) ester. Seet-Butyl peroxyisopropyl carbonate Carbonoperoxoic acid, 0,0-(1,1-dimethylpropyl) 0-(2-ethylhexyl) ester. See t-Amylperoxy 2-ethyl hexyl carbonate... 

From carbonohydrazide. Equimolar quantities of carbonohydrazide (71) and aroyl isothiocyanates undergo an addition-cyclization in dimethyl-formamide at 100 °C, with elimination of hydrazine, resulting in moderate yields of 2-aroylamido-5-hydroxy-l,3,4-thiadiazoles (73). The postulated intermediate mono-adducts (72) are not isolable, but stable addition... 

Environmental friendliness is of course only one important aspect to be considered. Explosives that show extraordinary properties such as stability, sensitivity, initiation efficiency, compatibility, or other properties can find their application in some special cases even though they will not meet the green criteria. Typical examples of such explosives may be the mercury salt of tetrazole or cirkon (cadmium(ll)tris-carbonohydrazide) perchlorate used in Russia [12, 13]. 

From Thio)carbonohy dr azides. 1,3,4-Thiadiazoles arise in the acidic cyclization of thioacylated (thio)carbonohydrazides. Thioaroylthioacetic acids" convert carbonohydrazide into 1-thioaroylcarbonohydrazides (95 R = H, X = O). 1-Phenyl- and 1-benzylidene-carbonohydrazide react to give similar compounds. All are readily cyclized by mineral acids to 2-aryl-5-hydroxy-l,3,4-thiadiazoles (96), with loss of hydrazine or its appropriate derivative. The action of acetic anhydride produces 2-acetoxy-5-phenyl-l,3,4-thiadiazoles directly, in one stage."... 

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