2) 3) What product results when an aldol is dehydrated? A) β-diketone B) β-ketoester C) conjugated alkyne D) β‚γ-unsaturated aldehyde E) α‚β-unsaturated aldehyde 3) 4) Which of the following will react most slowly with an enamine? A) methyl bromide B) allyl bromide C) acetyl chloride D) isopropyl chloride E) benzyl chloride 4) 5) What type of product results when 3-pentanone reacts with dimethylamine? A) enolate B) enol C) enamine D) imine 5) E) amide 6) The rel
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whether a chemical change occurs when Sodium Benzoate is acidified to Benzoic Acid. Theory: (2 points) Sodium Benzoate is a common food preservative found in jellies‚ jams‚ sodas‚ fruit juices‚ etc... Its acid‚ Benzoic Acid‚ is an organic preservative that stops the growth of bacteria‚ yeasts‚ and molds. Reaction: (3 points) Reaction: sodium benzoate + hydrochloric acid ( benzoic acid + sodium chloride Amounts: 2.00 g Sodium benzoate‚ 5.0 mL 3M hydrochloric acid
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manufacture of nitrocellulose (cellulose nitrate) which is used in smokeless gunpowder and as the base material for celluloid used for photographic and movie films until the mid-1930s. Cellulose is used to make water-soluble adhesives and binders such as methyl cellulose and carboxymethyl cellulose which are used in wallpaper paste. Microcrystalline cellulose (E460i) and powdered cellulose (E460ii) are used as inactive fillers in tablets[14] and as thickeners and stabilizers in processed foods. Cellulose
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Steam Distillation of Lemongrass Oil I. Introduction When a mixture of cyclohexane and toluene is distilled‚ the boiling point of these two miscible liquids is between the boiling points of each of the pure components. By contrast‚ if a mixture of benzene and water (Immiscible liquids) is distilled‚ the boiling point of the mixture will be found below the boiling point of each pure component. Since the two liquids are essentially insoluble in each other‚ the benzene molecules in a droplet of
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of phenylthiocarbamide‚ an organic compound used in genetics‚ and the ability and response of the tasting sodium benzoate paper‚ a food preservative. It is claimed that there is a direct relationship between the genes that control the tasting abilities of these two substances‚ primarily that if you had the ability to taste PTC‚ you would have a specific taste response for sodium benzoate‚ as well. After the experiment results were analyzed‚ it was determined that there is no direct correlation between
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using “Fmoc chemistry”. The first part of experiment was the synthesis of L-phenylalanine methyl ester hydrochloride. The methyl ester can be synthesised by reaction of thionyl chloride‚ SOCl2 and dry methanol with L-phenylalanine under reflux condition. The peptide bond was formed later in the experiment‚ where HBTU‚ DiPEA and a solution of Fmoc-Gly-OH in DMF were added to a solution of L-phenylalanine methyl ester hydrochloride in DMF. The product formed was the protected dipeptide‚ Fmoc-Gly-Phe-OMe
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Synthesis of Phenols You can prepare phenols in large quantities by the pyrolysis of the sodium salt of benzene sulfonic acid‚ by the Dow process‚ and by the air oxidation of cumene. Each of these processes is described below. You can also prepare small amounts of phenol by the peroxide oxidation of phenylboronic acid and the hydrolysis of diazonium salts. Pyrolysis of sodium benzene sulfonate In this process‚ benzene sulfonic acid is reacted with aqueous sodium hydroxide. The resulting salt
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Electron Spin Nuclear Magnetic Resonance (NMR) Spectroscopy Organic Chemistry BCH3015 • Electron spin is quantized. • The spin quantum number ms has only two allowed values: ms = +½ or –½ • The two directions of spin create oppositely spin create oppositely directed magnetic fields. fields. 61 Proton Spin Organic Chemistry BCH3015 62 Nuclear Spin States • A proton (the nucleus of a 1H atom) also possesses spin. For each nucleus having the spin quantum number
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mechanism of hydrotropism involves weak interactions between the hydrotropic agent and the insoluble drug. This method closely resembles complexation. Commonly used hydrotropic substances include caffeine‚ sorbitol‚ urea‚ nicotinamide‚ and sodium benzoate. Because hydrotropic substances consist of a hydrophobic end as well as a hydrophilic end‚ when these substances are added to a solute‚ the resulting effect is an increase in the water solubility of poorly soluble drugs by joining the hydrophobic
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produced from domestically grown‚ renewable sources‚ such as crop oils or animal fats which are then chemically converted into biodiesel (Habmigren‚ 2003). Unlike diesel‚ biodiesel contains no petroleum products and free of sulfur compounds and aromatics (Habmigren‚ 2003). Until today‚ it is still the only alternative fuel for motor vehicle. The biodiesel blends have ranged from 2/98% (B2)‚ 20/80% (B20)‚ to 100% (B100) (Hafman‚ 2003). The reasons biodiesel is a viable alternative to diesel from fossil
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