In this study the disposition of 1,2-[14C]dibromoethane (1, 2-[14C]DBE) was investigated in male Wistar rats. 1,2-DBE is a cytotoxic and carcinogenic compound that has been used as an additive in leaded gasoline and as a fumigant. 1,2-[14C]DBE was administered orally or iv. Radioactivity was recovered (mostly within 48 hr after administration) in urine (75-82% of the dose), feces (3.2-4% of the...

We recently reported the preparation of tetraquaternary salts derived from 4,4'-bipyridine of the type (1; R = Me or Et, n = 2 ,3 or 4) [1], and showed that they were reversibly reduced to diradical dicat­ ions (2; R = Me or Et, n = 2, 3 or 4) by the uptake of two electrons. Reversible redox systems of this type are of interest as components of electrochromic memory display devices [2—5], as bi...

Red Onion skin extract and Cashew nut shell liquid has been considered as one of the best antioxidant anti-inflammatory precursors, it contains various polyphenols important flavonoids. In this research, flavonoid derivatives were successfully synthesized from polar non-polar red onion skin, cashew a combination extracts liquid. process, crude was obtained using potassium carbonate via macerati...

1,2-Dibromoethane (EDB), which is a groundwater contaminant in areas where it was once used as a soil fumigant, was shown to be degraded aerobically by microorganisms in two types of surface soils from an EDB-contaminated groundwater discharge area. At initial concentrations of 6 to 8 mug/liter, EDB was degraded in a few days to near or below the detection limit of 0.02 mug/liter. At 15 to 18 m...

First attempts are described to prepare a precursor for an all-carbon analog of indigo, the tetracyclic triene 4. Starting from indan-2-one (9) the α-methylene ketone 13 was prepared. Upon subjecting this compound to a McMurry coupling reaction, it dimerized to the bis-indene derivative 17, rather than providing the tetramethyl derivative of 4, the hydrocarbon 14. In a second approach, indan-1-...

The stepwise synthesis of novel As−Sb and As−Bi bond containing molecules is described. binary interpnictogen compounds tBu2EAs(H)tBu (E=Sb (1), P (4)) were prepared by reaction tBu2ECl with tBuAs(H)Li ⋅ 1,4-dioxane. Subsequent lithiation yields the dimeric [tBu2EAsLi(thf)tBu]2 (2), E=P (5)). Compound 2 as well tBu2SbAs(tBu)SiMe3 (3) are not suitable synthons for longer chains due to non-select...

Two new series of various heterocyclic bis-Schiff bases Thiadiazoles disulfides and thioethers are synthesized. The first was the synthesis thiadiazole (4a-h) synthesized from their corresponding Schiff after oxidation by hydrogen peroxide. second base (7a-h). It obtained reaction bis-thiadiazole diamine (6) with different aldehyde. generated reacting dibromoethane in dimethylformamide triethyl...

The bacterial degradation and detoxification of chlorinated xenobiotic compounds requires the production of enzymes that are capable of recognizing and converting compounds which do not occur at significant concentrations in nature. We have studied the catabolic route of 1,2-dichloroethane as an example of a pathway for the conversion of such a synthetic compound. In strains of Xanthobacter and...

Articles you may be interested in 1,2-Dibromoethane on Cu(100): Bonding structure and transformation to C2H4 The covalent binding and adsorption states of acetonitrile on Si͑100͒ have been investigated using temperature programmed desorption ͑TPD͒, x-ray photoelectron spectroscopy ͑XPS͒, high-resolution electron energy loss spectroscopy ͑HREELS͒, and density function theory ͑DFT͒ calculation. XPS and HRE...