Thiourea reactions

Thiophene, aromaticity of, 530 Thiourea, reaction with alkyl halides, 667... 

Southard, M.Z. Green, D.W. Willhite, G.P. "Kinetics of the Chromium (VI)/Thiourea Reaction in the Presence of Polyacrylamide", SPE/DOE paper 12715, 1984 SPE/DOE Fourth Symposium on Enhanced Oil Recovery, Tulsa, April 15-18. 

Allylic bromides reacted with KSCN/Si02 and BnNH30Ac/Al203 in one-pot gives the corresponding thioureas. Reactions of crotyl bromide with a series of alkylammonium acetates, with the exception of tert-butylammonium acetate, results in the corresponding thioureas (Scheme 49).130... 

The Os04-thiourea reaction has recently been investigated kinetically.726,729... 

No nitrate is formed in this reaction, and it is therefore an excellent method for the complete removal of nitrite. Traces of nitrates are formed with ammonium chloride, urea, and thiourea (reaction 7, 8, and 9). 

The complexity of the chemistry of the chalgogenide precursors makes difficult the analysis of sulfide compound formation. Kitaev and coworkers [9,10] have used the equilibrium approach for various sulfides and selenides. For instance, in the case of sulfide formation with thiourea, reaction (22) is considered as reversible. Then it is possible to establish solubility diagrams. Assuming as an example that the total released sulfide ion concentration equals the cyanamide concentration gives ... 

The Os04-thiourea reaction htis recently been investigated kinetically. ... 

Mannose can interact specifically with macrophages and dendritic cells via surface mannose receptors involved in endocytosis and phagocytosis [61]. A mannose moiety can be introduced onto chitosan or chitosan-g-polyethyleneimine (PEI) molecules by a thiourea reaction between the isothiocyanate group and the amine groups (Eig. 6) [62, 63]. The mannose-bearing polymers show enhanced macrophage-specific bioactivity both as a vaccine and as a gene delivery system. 

Alamgir, M. Epstein, 1. R. 1985a. Complex Dynamical Behavior in a New Chemical Oscillator The Chlorite-Thiourea Reaction in a CSTR, Int. J. Chem. Kinet. 17,429-439. 

Compositions based on polymerizable methacrylate monomers can be polymerized employing a hydroperoxide ( t-butyl, cumyl or jp-methane) and a thiourea reducing agent (46-49). A possible mechanism of the hydroperoxide-thiourea reaction is given in Fig. 3. 

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