Dimethyl acetylenedicarboxylate (0.10 mL‚ 0.81 mmol) and nitrobenzene (1 mL) were added to to tetraphenylcyclopentadienone (0.103 g‚ 0.268 mmol) in a small reaction tube with a boiling stick using glass pipettes to form a dark purple soln. The rxn was then
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gift sample was Yellow colored‚ odorless crystalline powder (Table 5.1). 5.2 DRUG IDENTIFICATION Amphotericin B was identified by the procedures described in British Pharmacopoeia 2003. 5.2.1 Chemical Test In a drug solution (1 mL of 0.05% w/v) in dimethyl sulfoxide (DMSO)‚ 5 mL of orthophosphoric acid was added. A blue ring was observed at the
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to hydrogen atom. The initial product of the acid-base reaction is trimethylnitronium chloride. In the below example number two‚ aluminum chloride is Lewis acid and dimethyl ether is Lewis base. A curved arrow originates from oxygen atom and point to aluminum atom. The initial product of the acid-base reaction is aluminum dimethyl ether chloride. (1)(CH3)3N + HCl→(CH3)3N+H + Cl-(2)AlCl3 + CH3OCH3→Al-Cl3O+(CH3)2ReferencesWikipedia‚ the free encyclopedia. Lewis Acid.
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the United States military. Out of this research came the discovery of the repellent dimethyl phthalate in 1929. This material showed a good level of effectiveness against certain insect species‚ but it was ineffective against others. Two other materials were developed as insect repellents. Indalone was found to repel insects in 1937‚ and Rutgers 612 (2-ethyl-1‚3-hexane diol) was synthesized soon after. Like dimethyl phthalate‚ these materials had certain limitations which prevented their widespread
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DOI: 3/3/2016. Patient is a 59-year-old male senior mechanic who sustained a work-related injury to his left hand/wrist‚ left shoulder‚ hip‚ back‚ and neck when he lost balance and fell while unloading furniture from truck. Per OMNI entry‚ he was initially diagnosed with fracture of the left hand and sprain/strain of the left shoulder and back. Based on the medical report dated 01/10/17‚ the patient complains of pain in the neck and low back‚ right leg and left arm. Pain is described as dull/aching
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Abstract In this experiment‚ the nature of linkage isomers will be observed on the example of nitritopentaamminecobalt(III) Chloride and nitropentaamminecobalt(III) Chloride. Their relative stability will be compared on standard conditions and the infrared spectroscopy of both the isomers will be obtained to analyze the characteristic absorption bands for the nitro and nitrito group. Yield for nitritopentamminecobalt(III) Chloride was obtained to be = 1.9221 g(73.24 %) and yield for nitropentamminecobalt(III)
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Thin Layer Chromatography Submitted in partial fulfillment of the requirements for: CHE 324 Organic Chemistry Laboratory Dr. Robert Duncan Fall Semester 2012 Caitlin Inman‚ Team Leader October 9‚ 2012 Tyler Byrd‚ Data Collection Shared Role‚ Technique Expert Introduction: “Chromatography is used to separate components of a mixture. For example‚ imagine a mixture of wood pieces‚ pebbles‚ and large rocks to be separated and the chromatography setup as a stream. Flowing water
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even felt in Houston‚ 35 miles distant. Reports indicated that 15 people had been killed and well over 150 were injured‚ many of those seriously burned. A BP spokesperson addressed the media by explaining how the explosion had occurred while an “isomerization unit of the plant was being brought back on stream to full production after having been shut down for annual inspection and repair” (Hosmer‚ 49). As the families of those killed in the explosion mourned their losses‚ BP pledged to a “long and intensive
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CHM 2210 – Fall 2012 – Test 4 Name (print):_________________________ 1. What is the IUPAC name for the following compound? a) b) c) d) 3-methyl-1-penten-4-yne 3-methyl-1-buten-4-yne 4-methyl-4-penten-1-yne 4-methyl-4-buten-1-yne 2. What is the major organic product obtained from the following reaction? 2 equiv Br2 a) b) c) d) 2‚3-dibromobutane 2‚2‚3‚3-tetrabromobutane 2‚3-dibromobutene 2‚2-dibromobutane 3. What is the best choice of reagent(s) to perform the following transformation
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aniline. Make also a diazonium salt using nitroaniline using the same process. B. Coupling Make stock solutions of the following compounds to be coupled with the diazonium compounds above. Use‚ phenol‚ naphthol and dimethyl aniline. Dissolve each in 4 mL 10% NaOH. For dimethyl aniline‚ include 250 mg pyridine. The reactions proceed with stirring and solid precipitates formed rapidly. The
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