Glycidoxypropyltrimethoxysilane Synthesis

The API of AN (99.9% pure) 1000mg was purchased from market. HPLC grade acetonitrile (SD fine limited). Analytical grade hydrochloric acid ,sodium hydroxide flakes, hydrogen peroxide. Milli-Q Water purchased from market..

To find chemical equilibrium, the following chemical equation is used in the experiment: Fe3+(aq) + SCN-(aq)  FeSCN2+(aq). When iron (III) and thiocyanate react, thiocyanoiron (III) is produced. When the concentration of all ions at equilibrium are known, the equilibrium constant can be calculated by dividing the equilibrium concentration of the reactant by the equilibrium concentration of the products. In this experiment, four equilibrium systems containing different concentrations of three different ion types (Fe(NO3)3, KSCN-, and distilled water) are made and used to determine equilibrium concentrations. The equilibrium concentrations are used to calculate the concentration that all of the components of the chemical equation are at equilibrium. Using a colorimeter or spectrometer to determine the equilibrium concentration of FeSCN2+(aq) and

Anthracene-9,10-bismethylmalonate (ADMA), Orange G and polystyrene (PS, Mw = 192,000 g/mol) were purchased from Sigma-Aldrich. Acetic acid (glacial), tetrahydrofuran (THF) and dimethylformamide (DMF) were purchased from Saarchem, while Rose Bengal was purchased from Fluka. Water collected from milli-Q water (Millipore corp., Bedford, MA, USA) was used for the preparation of

On its durability and any hazardous elements in it, we can assure you that our coatings are semi-permanent and completely inert. They are not like release agents. They are completely safe with no outgassing.

The purpose of this experiment was to perform a Wittig reaction using two different methods: In method I, 250 mg aldehyde was mixed with 785 mg phosphonium salt in 5 M NaOH solvent. This mixture was stirred for thirty minutes and filter by vacuum filtration for the product. In method 2, 250 mg of aldehyde, 785 mg, benzyltriphenylphosphonium chloride, and 380 mg potassium phosphate tribasic were homogenize with a pestle and mortar. Vacuum filtration was also used in this method to attain the product. The products in both methods were used for recrystallization and TLC. For recrystallization, boiling ethanol was used as the solvent. In the TLC procedure, 90/10 hexane and ethyl acetate was used. NMR was collected for products used in these methods.

The objective of this experiment was to create synthesize methyl eugenol from eugenol, dimethyl carbonate, and tetrabutylammonium bromide. To start off the experiment, a heating under reflux apparatus was used and the parts included: a water jacketed condenser, ring stand, tubes, flowing water, 25-mL round bottom flask, heating block, and a hot plate. There were two parts to the water condenser, entry and exit ways for water. The bottom opening was connected to the sink through one tube and the top opening was connected with a loose end, which was needed to get rid of the flowing water. To create the solution needed to synthesize methyl eugenol, approximately 0.200 g of eugenol (note: the measured g was converted to mg for later calculations) was measured, alongside approximately 1.2 g of TBAB and was added to the 25-mL round bottom flask. As a safety precaution, the measured 4.0 mL of DMC was added to the flask under the hood. A stir flea was then added and was used to dissolve the TBAB. After dissolving the TBAB, approximately 0.52 g of potassium carbonate was added to the flask (note: potassium carbonate is hygroscopic and could readily take in moisture).

Eucalyptol is quickly absorbed from the gastrointestinal tract. It is lipid soluble and absorption is enhanced in the presence of milk. Inhalation of the liquid is directly toxic to the lungs; however there is no data suggesting systemic absorption via lungs 8.

In our initial experiments, a 19% yield of 3,4-dicarbonyl substituted furan 3a was obtained when α,β-unsaturated carbonyl (1a) and 1,3 diketone (2b) were employed for the reaction (Table 1, entry 1) in a 1:2 molar ratio in the presence of 10mg of CuO-NPs in EtOH at room temperature without any

To the solution of methanol (50 ml) and KOH (1.1eq), carbon disulphide (1.1eq) was added slowly at room temperature. To the reaction mass, 2-aminophenol (1.eq) was added with stirring. The reaction mass was refluxed for 6 hr on water bath. Completion of the reaction was monitored by TLC. The reaction

The synthesis was done following procedure from [15]. Rose Bengal Na+ salt (915 mg, 0.90 mmol) was dissolved in DMF (2ml) and DIPEA (0.312 ml, 1.80 mmol), HATU (308 mg, 0.81 mmol) were added. After activation for 15 min, the mixture was added to O-Bis-(aminoethyl)ethylene glycol trityl resin (309 mg, 0.31 mmol) preswollen in DMF for 2 hours. The coupling reaction wrapped in aluminum foil was allowed to proceed overnight on a nitrogen bubbler apparatus. The resulting red-burgundy coloured resin was filtered and washed well with DMF. The resin was treated with 20% piperidine in DMF to hydrolyze any unwanted acylation on the phenolic hydroxyl groups. The resin

Asthma is known as a chronic, inflammatory lung disease. It can potentially be of genetic inheritance and/or environmental factors.1 Asthma can entail of many disturbances such as coughing, breathing difficulty, wheezing, and maybe even chest tightness.2 This disease state occurs in approximately about 25.7 million people in the United States, which is about 8.4% of the population.1 Furthermore, approximately 4,000 people died from asthma in 2009, and about 9 people due from this disease state each day.2

Experiment VIII was performed to analyze SN2 and SN1 using tertiary and primary substrates and use gas chromatography (GC) to examine the SN1 reaction. The product of the SN2 reaction was classified as n-butyl iodide by using infrared spectroscopy and gas chromatography mass spectroscopy and the product of the SN1

N,N-Dimethyl formamide (DMF), 2,2-Azobisisobutyronitrile (AIBN), Silver nitrate (AgNO3) and Methanol were purchased from the lobachemie Pvt. Ltd. (India). Styrene monomer was procured from the sigma-Aldrich. Co. The solvents DMF and methanol were distilled for purification. Other chemicals were used as obtained.

HYPOTHESIS; This investigation involves the comparison of 3 different bases which might be the active elements of some antacids; drugs which are taken to relieve heartburn. As such, the sets of experiment will involve subjecting the 3 bases to the same conditions. In fact, for a set of experiments, the

 100 mg Drug was weighed as per the recommended dose of Diclofenac Sodium.  Accurately weighed of amount non- pareil seeds were dried to remove moisture at 35oC.  These non pareil seeds has been transfer to a coating pan, which has a bed temperature of 350 C.  Isopropyl alcohol : water (70:30) with 5%