Dicyanamide

N,]Sf -DicHoiocaibodiimide is useful ia preparation of photothermographic materials (101). Chlorinated guanylurea (av CI2 85%), prepared from dicyanamide, is useful as a bleach for synthetic fabrics (102). Chlorazodin, dichloroa2odicarbonarnidine, NH2C(=NC1) N=NC(=NC1) NH2, [502-98-7]... 

Cyanogen chloride and NaOH give the potentially useful sodium dicyanamide [1934-75-4] salt (14). 

Uses. Dicyandiamide is used as a raw material for the manufacture of several chemicals, such as guanamines, biguanide and guanidine salts, and various resias. Siace 1975, it has also been used ia the manufacture of potassium or sodium dicyanamide which are used as iasecticides and ia chemotherapy. Melamine has extensive appHcations ia the resia and plastic iadustry guanamines are used as copolymers (qv) ia many resia compositions. Guanidine phosphate [1763-07-1] is employed as a fire retardant ia appHcations where water solubiHty is not a drawback. 

The pA a of dicyanamide is less than 1, so it exists mainly as the anion under the reaction conditions. aHA is a negative number, so the absolute value is taken.) This equation constitutes the R step. The quantity 3 uc deseribes the fraetional extent of the R 1 step, which is... 

Figure 5-23. RIP diagram for the general acid-catalyzed addition of anilines to dicyanamide.

Yet another example of a so-called pharmacophoric group is the biguanide functionality, a grouping associated with oral antidiabetic activity (see the section on sulfonylureas for a fuller discussion of this activity). Condensation of 2-phenethylamine with dicyanamide affords directly the orally active hypoglycemic agent phenformin (88). ... 

Reaction of p-chloroaniline with dicyanamide affords the biguan-ide, 182. This is condensed immediately with acetone to form the aminal cycloguanil (183). The compound is usually used as a salt with pamoic acid (184). 

Homo- and heteroleptic complexes of Cd alone and of Cd and Hg with the ligand dicyanamide (dca) N(CN)2-, homologous to cyanamide NCN2-, have been studied in various solvents (formation constants of the complexes [M(dca) ](" 2> (M = Cd, Hg l < n < 4)), with the result that the complexes of Hg are more stable than those of Cd. Otherwise, obviously no studies on the isolated compounds M(dca)2 or on homoleptic complexes derived therefrom have been published. 

During pyrolysis to silver (via silver dicyanamide), initial heating must be slow to avoid explosion [1], High intensity illumination will also cause explosive decomposition of a confined sample [2], Safety precautions for preparation and subsequent use of the explosive salt are detailed [3],... 

Perfluoro-iV-cyanodiaminomethane [16408-94-9] F2NCF2N(F)C=N See Fluorine Sodium dicyanamide See Other CYANO COMPOUNDS, DIFLUOROAMINO COMPOUNDS c2f5n3... 

The product, peril uoro-/V-cyanodiaminomcthanc, and many of the by-products from interaction of fluorine and sodium dicyanamide, are extremely explosive in gaseous, liquid and solid states. 

The -bipyrimidine compounds are of type 4. Our attempts to obtain new SCO species have also, to date, largely concentrated on type 4, some of which are described below. We were particularly gratified to see a recent successful example of type 3, isolated by Real et al. [47] using the YY bridging groups dicyanamide (NC-N-CN)- and terminal (N)5 chelator of the Toftlund type [48]. Some details are given later. 

In recent times, the development of new ionic liquids has made great progress. Important developments include a range of new halogen-free ionic liquids (e.g., benzenesulfonates [13], toluenesulfonates, alkylsulfates [14], hydro-gensulfate [15, 16], dicyanamides [17], thiocyanates [18], etc.), as well as functionalized (task-specific) [19-23], fluorinated [24], deuterated [25] and chiral ionic liquids [26-30]. 

Sodium dichromate, 6 522, 9 630-632 manufacture, 6 538-543 U.S. exports, 6 544t U.S. imports for consumption, 6 545t Sodium dichromateCVI) dihydrate physical properties, 6 528t Sodium dicyanamide, 8 160 Sodium diethyldithiocarbamate molecular formula, 5 713t... 

When calcium carbinde is made to react with nitrogen calcium cyanamide is produced which on acid hydrolysis yields cyanamide. Cyanamide on heating to 100°C yields dicyanamide which on heating above its Melting point yields melamine. 

Ethylmercury produced about equal amounts of mercury vapour and an uncharacterized volatile ethylmercury compound, while methylmercury chloride and methylmercury dicyanamide both produced an uncharacterized methylmercury compound plus some mercury vapour. 

Total mercury is determined in soils containing phenylmercury acetate and or ethylmercury acetate using the method described by Polley and Miller [31]. Total mercury is determined in soils containing methylmercury chloride and methylmercury dicyanamide by the method described by Kimura and Miller [32], Kimura and Miller [30] present chemical data on the nature of residual mercurials in soil and in the atmosphere surrounding the treated soil to further elucidate the phenomena of degradation in soil. 

Phenylguanamine (2,4-diamino-6-phenyl-l,3,5-triazine) is synthesized from benzonitrile and dicyanamide ... 

Dexivacaine, 95 DBxnorgBstrel acetime, 152 Diabetes, 116 Diamocaine, 336 Diapamide, 93 Diaveridine, 302 Diazepam, 452 Diazoxide, 395 Dibenzepin, 424, 471 DichloroisopTTOterenol, 106 Diclofenac, 70 Dicyanamide, 21 Dieckmann cyclization, 72 Difenoximide, 331 Difenoxin, 331 Diflucortolone, 192 Diflumidone, 98 Diflunisal, 85, 86 Difluoromethylene groups, from ketones, 196 Difluprednate, 191 Dihydrocodeinone, 318 Dihydropyridine synthesis, 283... 

Ferrihydrite Conversion cyanamide to urea or dicyanamide Amberg and Vilsmeier, 1978... 

The final product is identical with a sample prepared from benzoyl dicyanamide and hydroxylamine. The mechanism of this reaction is then... 

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