Allylthiourea

TABLE 11.16, 2-ALLYLAMINOTHTAZOLES FROM ALLYLTHIOUREA AND a-HALOCARBONYT. COMPOUNDS... 

V-Allylthiourea (thiosinamine) [109-57-9] M 116.2, m 70-73 , 78 . Recrystd from H2O. Soluble in 30 parts of cold H2O, soluble in EtOH but insoluble in "CeHg. Also recrystd from acetone, EtOH or ethyl acetate, after decolorising with charcoal. The white crystals have a bitter taste with a slight garlic odour and are TOXIC. [Anal Chem 21 421 7949.]... 

Thiourea and allylthiourea (20), D-xylulose (22), sodium diethyldithiocarbamate, L-methionine, and -propyl-di- -propylthiol-carbamate (163), 12 6-(substituted) purines (166), and two coumarin derivatives (164) have been found to promote Striga seed germination. None of these materials, however, appear to be constituents of the natural stimulant preparations. 

Substituted thioureas have been extensively studied over the decades. Reaction of CoX2 (X = C1, Br) with substituted phenylthioureas yield a range of complexes involving halide and thiourea as ligands, characterized by spectroscopy and thermogravimetric analysis.503 Both [Co(Rtu)4(OH2)2]2+ (Rtu = thiourea, phenylthiourea, allylthiourea) and [Co(Rtu)2(OH2)4]2+ (Rtu = diphenylthiourea) have been prepared and characterized as low-spin octahedral species.504 The octahedral bis(phenylthiourea)bis(dithiolate)cobalt(II) complex, one of a number of complexes of phenylthiourea, chlorophenylthiourea and bis(diphenylphospinothioyl)methane prepared and characterized,505 proved the most biologically active of those tested. 

Allyl isothiocyanate, 1471 Allyllithium, 1177 Allylmercury(ll) iodide, 1173 l-Allyloxy-2,3-epoxypropane, 2434 Allyl phosphorodichloridite, 1169 A-Allylthiourea, 1600... 

Acetohydrazide, 0912 Acetone oxime, 1258 Acetylenedicarboxylic acid, 1405 I Acrylaldehyde, 1145 t Allyl acetate, 1912 A-Allylthiourea, 1600 4-Aminophenylazobenzene, 3487 Ammonium dichromate, 4246 Ammonium peroxodisulfate, 4576 4-Azidobenzaldehyde, 2697 2-Azido-2-phenylpropane, 3159 t Aziridine, 0863 Azobenzene, 3483 Azoformamide, 0816 Azoisobutyronitrile, 3011 Azoxybenzene, 3485 Benzaldehyde oxime, 2760... 

Chlorophyll has been shown to be a sensitizer for type II photooxygenation reactions of various substrates.61135 A quantitative study has been made with allylthiourea as a substrate by Livingston and Owens.86... 

Therefore, the reaction constant evaluated from the variation of ao2 with the concentration of allylthiourea has been taken as kejk9 + Au[S]/fc9. However, no experiments with different chlorophyll concentrations have been reported in order to show the dependence of this constant on [S]. 

According to Table VI, the quantum yield of allylthiourea oxygenation, 4ao2, exceeds the quantum yield of triplet chlorophyll formation,... 

While referring to precipitation in solution and not CD of films, it is of interest to mention that V-allylthiourea was used as a sulphur source in a Zn /am-monia bath [133]. Pure ZnS (as detected by XRD) was obtained at a pH of ca. 11.0 at 90°C. At lower pH values (and at 80°C), only ZnO was obtained at higher values, a mixture of ZnO and ZnS was formed. The ZnS was the wurtzite form in all cases. The ZnS crystal size was ca. 5 nm at pH = 11.0 and slightly smaller (ca. 4 nm) at higher pH values, which gave a mixed phase of ZnS and ZnO. The ZnO crystal size was much larger (ca. 200 nm). The ZnS fraction increased as the ammonia concentration (at constant pH) increased (lower [Zn ]) or as the pH decreased (at constant ammonia concentration) from 13 to 11 (lower [OH ]). Such experiments should help in choosing optimum conditions for CD. 

Figure 28.10 Photocurrent per incident photon for various monolayer assemblies on ln203. Configuration 0 is for a bilayer of surfactant molecules without dye deposited on the electrode (represented as the lower shaded area). Configuration I involves the donor dye in the outer layer and configuration II features the acceptor dye in the inner layer. In each of these cases, the remaining layer is made up of a surfactant without dye. Configuration III has both dyes together in the arrangement shown. The electrolyte was 5 mM borate buffer of pH 10 with 0.5 M allylthiourea as supersensitizer. [From Ref. 53.]...

Allyloxy-2,3-epoxypropane, 2428 iV-Allylthiourea, 1595 f 3-Aminopropene, 1250 3-Azidopropene, 1184 f 3-Bromo-l-propene, 1149 f l-Bromo-2-butene, 1543... 

Acetohydrazide, 0908 Acetone oxime, 1254 Acetylenedicarboxylic acid, 1401 f Acrylaldehyde, 1142 f Allyl acetate, 1906 iV-Allylthiourea, 1595 4-Aminophenylazobenzene, 3481 Ammonium dichromate, 4240 Ammonium peroxodisulfate, 4571 2-Azido-2-phenylpropane, 3154... 

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