Acetic anhydride

Hydroboration/Oxidation of an Alkene Introduction: An alcohol can be added across the double bond of an alkene via hydration, which is the addition of a proton and alcohol group to the double bond. This reaction can yield either a Markovnikov alcohol or an Anti-Markovnikov alcohol. If the reaction is carried out in acidic conditions, the reaction yields a Markovnikov alcohol. The mechanism includes the formation of a carbocation intermediate, which has a lower activation energy when it is…

solution, because it is the source of the Grignard reagent. Because the halide cannot be eliminated, the next best option is to minimize the amount of halide in the reaction. In this experiment, a small concentration of the halide is reacted with a high concentration of magnesium to ensure maximum contact between halides and magnesium. To do this, magnesium will be placed in the round bottom flask and then halides are slowly added. Another potential source of error is that Grignard reagents must…

Experiments involving chemical reactions can be performed using simple household ingredients and products such as baking soda and vinegar. When baking soda (sodium hydrogen carbonate) reacts with ethanoic acid which is found in vinegar in a 1:1 ration, the reaction will produce three different products which are water, carbon dioxide and Sodium acetate. The reaction is: NaHCO3 + HC2H3O2 → NaC2H3O2 + H2O + CO2 In the experiment, the quantitative relationship between the two reagents which is the…

Results/Discussion: 2-butanol and Acetic Acid were refluxed together with anti-bumping granules and a catalyst of sulphuric acid for 1 hour and five minutes. Anti-bumping granules are small ceramic granules which have rough edges. They are added within a mixture to encourage smooth boiling. In this experiment by adding the anti-bumping granules we were able to achieve smooth boiling throughout both the reflux process and the distillation process. Without adding these granules, bubbles of vapour…

Ethyl vinyl ether was used to protect –OH on glycidol based on a literature reported protocal.59 In a typical procedure, 0.675 mol glycidol and 200 mL ethyl vinyl ether were loaded in a round-bottom flask, to which 1.25 g TsOH was then added. The reaction was allowed to proceed at room temperature (RT) for 3h. The resulting mixture was then purified by washing with 100 ml saturated aqueous solution of NaHCO3 for 3 times. The organic layer obtained was dried by MgSO4. After filtration of MgSO4,…

took place. The temperature dropped about 6 degrees Celsius. The remaining solution was a filmy and diluted. The result was sodium acetate dissolved in water. This reaction was a double displacement reaction. The sodium bicarbonate reacted with the acetic acid vinegar and produced sodium acetate, water, and carbon dioxide. The carbon dioxide escaped from the solution leaving water and sodium acetate.…

T. Heinze et. al. reported the synthesis of new 6-deoxy-6-pheylethylamino cellulose derivatives with DSamino 0.4-0.6 by nucleophilic displacement of cellulose tosylates (DSTos 0.74 and 1.29) with a racemic mixture of 1-phenylethylamine under homogeneous conditions, in DMF/H2O82, scheme 30. The optical properties of these deoxyamino cellulose derivatives was studied. A regioselective synthesis of 6-amino-6-deoxycellulose, 6-N-sulfonated, and 6-N-carboxymethylated deoxycellulose were…

Danika Ng CHEM 1252 L Exp 12: Thermodynamic Analysis of Chemical Equilibria INTRODUCTION The reaction being done with borax and HCl is an acid base reaction. The K constant expression of the reaction is Kc = [Na^+][B4O7^-2]. A titration is needed for this experiment because when a strong acid with a known concentration is added to a weak base, the unknown concentration of the weak base can be found, which can then find the moles of the weak base, which can then find the Kc. The first law of…

MYCOCEPT (Mycophenolate mofetil) is the 2-morholinoethyl ester of mycophenolic acid (MPA). CHEMICAL NAME: 2-morpholin-4-ylethyl (E)-6- (4-hydroxy-6-methoxy-7-methyl-3-oxo-1H-2-benzofuran-5-yl)-4-methylhex-4 enoate. STRUCTURAL FORMULA: Fig: Mycophenolate mofetil MOLECULAR WEIGHT: 433.50g/mol APPEARANCE: Mycophenolate mofetil, is a white to off-white crystalline powder. SOLUBILITY: It is slightly…

Scheme 11: Synthesis of 3h & 3i from 2a-i. Compounds: 3h : 7-Hydroxy-3-(4-methoxybenzyl)chromanone(Dihydrobonducelin) R1=OH, R2=R3=H,R4=OCH3 3i : 7-Hydroxy-3-(2,4-dimethoxybenzyl)chromanone (2’-Methoxydihydrobonducellin) R1=OH,R3=H,R2=R4=OCH3 Antioxidant activity of above synthesized derivatives were studied, on that basis 3-benzylchromones with phenolic hydroxyl group (2h & 2i) showed highest activity than com-pound with methoxyl group (2e & 2g) because double bond between C2-C3 done major…