Organic Chemistry

Refer to the 1H NMR spectrum of the 2-aminocyclohexanol and measure the coupling constants for the protons at 2.5 ppm and 3.2 ppm - The protons are adjacent to the NH and OH respectively. Use these coupling constants to provide evidence that the product is structure shown below and explain each proton coupling. This is the trans di-equatorial product. Typical J values are: Jaxial-axial = 8 to 13 Hz Jequatorial - equatorial = 2 to 6 Hz

Make the physical model and draw the compound on chemagic. Insert pictures below as indicated. Purpose: Observe physical differences between cis/trans isomers and which bonds can rotate and which cannot. Use the physical models to rotate atoms to see if it rotates.

Make the physical model and draw the compound on chemagic. Insert pictures below as indicated. Purpose: Observe physical differences between planar and non-planar portions of the molecule.

Make the physical model and draw the compound on Chemagic. Insert pictures below as indicated. Purpose: Observe ridged nature of bicyclic compounds.

Use the Name function on chemagic to pull up Norbornane, 2-chloro- Fill in all three screens below. Purpose: learning to further use Chemagic and complex 3D drawings

Use the Name function on chemagic to pull up 1-hexen-3-ol. Fill in all three screens below. Purpose: compare sp² and sp³ portions of the molecule, planar vs tetrahedral.

Question 52 (0.0001 points) (5 marks) The reaction 2HCl(g) = H₂(g) + Cl₂(g) has Kc = 3.2 x 10-34 at 25 °C. If the reaction vessel initially contains 0.0350 mol L-1 of HCI, what will be the concentrations of H₂ and Cl₂ at equilibrium?

Draw all pertinent structures or when applicable, the full reaction mechanism with arrow pushing and intermediates included. All collected and calculated data must be tabulated including spectroscopic data with bond analysis (standards and experimental, indicating the EXACT wavenumber and the corresponding bond) Calculations MUST NOT BE in a table, should be shown under the table, TYPED! Display all calculating methods and formulas and show limiting reagent, theoretical and % yield Label all data and images, include legend for spectra and tables. Include whichever is applicable for each experiment: -Collected data (starting amounts, and collected amounts) (in a table format) -Calculated data (in a table format) (all calculations must be shown under the table to earn credit) -Show and use proper calculation formulas, for mass, moles, density, etc. -Calculate and show Limiting reagent  -Calculate and show Theoretical Yield  -Calculate and show % Yield  -Spectroscopy data with bonds labeled (standards and experimental, in a table format)

Preparation of Synthetic Banana Oil (Isopentyl Acetate) Isolation of Chlorophyll and Carotenoid Pigment from Starch Assigned Questions 2. Why is the mixture extracted with sodium bicarbonate? Give an equation and explain its relevance. - Sodium bicarbonate is preferable for this extraction because it will react with any unreacted or residual acid in the mixture to form neutralized solution. The ester, which is water insoluble, would separate from the neutralized acid because it is water soluble. This will increase the purity of the end product. The esterification process cannot be reversed with sodium bicarbonate because it is a weak base. As a result, it can remove the carboxylic acid and sulfuric acid catalysts that have not been reacted. The equation is R-CO-H-->R-CO-(COO-) because the esters are released from the molecule as carbon dioxide and water. 3. Why are gas bubbles observed when the sodium bicarbonate is added? - The reaction of the sodium bicarbonate with the acid emits Carbon dioxide gas, which is observed as gas bubbles. Which reagent is used o the reaction 4. Which starting material is the limiting reagent in this procedure? Which reagent in excess? How great is the molar excess (how many times greater)? - The isopentyl alcohol is the limiting reagent while acetic acid is the excess reagent. The molar excess is about 1.5 – 1.75 times more than the amount theoretically produced. 5. Outline a separation scheme for isolating pure isopentyl acetate from the ro mixture. - The crude product is washed with 10 ml of water before being transferred to a separatory funnel. When the solution forms two layers, the bottom aqueous layer is discarded. After that, the answer is blended with 5 ml portions of 5% sodium bicarbonate until distinct layers emerge; the bottom layer is then drained off. 5 ml portions of 5% sodium bicarbonate are fed continually until the aqueous layer’s pH becomes basic.

(6 pts.) 1. Give the major organic product(s) including any appropriate stereochemistry. H₂CO OH OEt OH CH3 CH₂ 1. SOCI ₂. pyr 2. CH₂OH + 3. CH₂CH₂CH₂MgBr (2 eq) 4. H₂0* 1. CH3CH₂CH₂CH₂NH₂, DCC 2. LAH 3. H₂O* 1. LDA, -30°C 2. CHyCH,CH,CH,C + Eto OE! OH¹ EIO ¹ Eto¹