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Organic-Chemistry Questions
Organic-Chemistry Questions
In the H1 NMR of isoamyl acetate, which protons are responsible for the triplet at 4.1 ppm? Which protons are responsible for the doublet at 0.93 ppm?
In the 13C NMR of isoamyl alcohol, which carbon is responsible for the resonance at 60.9 ppm? Which carbons are equivalent (give one signal) in the 13C NMR of isoamyl alcohol?
The product of this reaction
Geometric isomers occur in some alkenes. These isomers are called cis–trans isomers because of the spatial orientation of the atoms or groups of atoms attached to the two carbons that form the double bond.
Draw the structure of a hypothetical nonreducing disaccharide composed of two aldohexoses
What structural characteristics are needed if a disaccharide is to be a reducing sugar?
1. Which of the following gives a positive Benedict’s test? Explain.
Use the table below to predict the test results you would expect with each regent for the carbohydrates described in the background material.
A three‑dimensional representation of butane is shown. Translate the information about the conformation of butane into its Newman projection, and determine if this conformation represents a local energy minimum or a global energy minimum
Draw the expanded structural formula for the condensed formula CH3CH(CH3)CHBrCH2COOH. Draw all hydrogen atoms.
Consider the skeletal structure in line‑angle (line‑bond) mode of 1‑isopropyl‑2‑methylcyclohexane. Identify the number of hydrogen atoms bound to each carbon in the structure.
Draw the complete structure of propane. (Draw all hydrogen atoms.) b) Draw the structure of propane in skeleton mode or as a bond-line structure. (Do not draw the hydrogen atoms.)
How many hydrogen atoms are in the unbranched alkane with 23 carbon atoms? Is there an unbranched alkane containing 47 hydrogen atoms?
For the highlighted atoms, determine the hybridization and the formal charge. If an atom is formally neutral, indicate a charge of zero.
Draw two Lewis structures for a compound with a formula C₄H₁₀. No atoms bear a charge, and all carbons have complete octets. Include all hydrogen atoms.
Consider the resonance structures for the carbonate ion.
Consider the incomplete structure shown.
Given the structure of methyl formate, predict the bond angles.
Identify the optimum C–C–C bond angle for each of the indicated carbon atoms in the molecule.
Predict the approximate molecular geometry of a BF⁻₄ ion.
Select the appropriate bond dipoles for the carbon‑magnesium bonds of dimethylmagnesium. Leave the box blank for a nonpolar bond.
Analyze the polarity of each bond in the organic compound.
For each compound, determine the direction of bond polarity. Leave the box blank for a nonpolar bond
Consider the incomplete structure. Add formal charges as necessary to the structure. All unshared valence electrons are shown. Do not alter the structure‑just add charges. If you need to revert the drawing palette to the original state, select the More me
Consider the incomplete structure. Add formal charges as necessary to the structure. All unshared valence electrons are shown. If you need to revert the drawing palette to the original state, select the More menu, then select Reset Drawing.
Draw the Lewis Structure of CO. Include lone pairs and formal charges.
The skeleton of acetic acid is shown. Complete the structure by adding bonds and nonbonding electrons.
Complete these structures by adding electrons, in the form of dots, as needed.
Draw the Lewis Structure for ammonium, NH₄⁺. Include formal charges.
Predict the organic products of the reaction. Show stereochemistry clearly. Draw the (3S,4R) product. Draw the (3R,4S) product.
Predict the major product and draw the stepwise for the reaction.
Consider 3,5-dibromoheptane. On the template below, fill in the atoms (H and Br) needed to draw all possible stereoisomers. Refer to your drawings by the numbers given to answer the following. A) do any of these molecules have a plan of symmetry? If so wh
Camphor ( C10H16O ) is a natural compound found in the wood of camphor laurel, an evergreen native to southeast Asia. Borneol ( C10H18O ) and isoborneol ( C10H18O ) are similar to camphor, but are alcohols instead of a ketone. The difference between borne
During the extraction, indicate which substance(s) is (are) removed at each step with the following reagents: a. washing with water; b. washing with saturated sodium bicarbonate.
Since the reaction you wil perform is reversible, give two ways you could push the equilibrium in the forward direction in the laboratory.
Propose a reasonable mechanism for the following reactions. Show charges.
Identify the reagents that can be used to produce each of the following compounds via an aldol reaction. Show mechanisms and charges.
Predict the major product obtained when each of the following aldehydes is treated with aqueous sodium hydroxide. Show mechanisms and charges.
Draw both resonance structures of the enolate formed when each of the following ketones is treated with a strong base. Show mechanisms.
Draw the two possible enols that can be formed from 3-methyl-2-butanone and show a mechanism of formation of each under basic conditions (NaOH/H2O). Show mechanisms.
Fill in the blanks. The base to form the enolate of the ester in a Claisen condensation must match the __________ side of the ester because of NaOH is used, _______________ occurs instead of enolate formation.
Provide the structures of the products of each reaction below. Indicate formal charges. Write out mechanisms.
Propose a mechanism for the Claisen condensation below. Be sure to include any important resonance contributors. Indicate formal charges.
Draw the 3 most important contributors to the resonance hybrid for the anion that forms when the diester below is treated with sodium methoxide. Indicate any formal charges.
Propose a mechanism for the aldol condensation below. Be sure to include any important resonance contributors. Indicate any formal charges.
Predict the product that results when the aldol addition reaction below occurs. Make sure to clearly indicate any formal charges.
Draw the two resonance structures that most accurately describe the enolate that forms when the aldehyde below is treated with sodium hydroxide.
Referring to the IR spectrum of salicylamide, identify the absoption (both the frequency and the molecular motion) in the fingerprint region that is indicative of the substitution pattern of salicylamide.
Draw the product of the reaction. Draw any hydrogens on oxygen and nitrogen, where applicable.
Test your cumulative knowledge of the reactions learned thus far by completing the following chemical trans- formations. Note: Some will require more than one step. JUST C, J,L,Q
Rank the following compounds in order of increasing reactivity.
Using the Henderson-Hasselbalch equation, determine at what pH the ratio of amine to ammonium ion will be 1 to 100. Write your answer in the box provided.
In the box provided draw the structure of the fatty acid formed upon hydrolysis of the fat using dilute acid.
In the boxes provided draw the structures of the organic products formed in the following reactions.
In the box provided draw the structure of the salt formed when the acid shown is reacted with sodium bicarbonate.
In the boxes provided, draw the structures of the four intermediates and the organic product when the following compound is reacted with methanol in the presence of acid in a Fischer esterification reaction. You don’t have to show the important resonance
In the box provided, draw the structures of the phosphorus ylid and carbonyl compound that can be reacted in a Wittig reaction to form the alkene shown below.
In the boxes provided, draw the structures of the three intermediates and the organic product formed when the ester shown is reacted with excess ethylmagnesium bromide followed by water.
In the boxes provided, draw the structures of the two intermediates and the one organic product formed in the following reaction.
In the boxes provided draw the structures of the organic products formed in the following reactions.
In the box provided, draw the two stereochemical products formed when the ketone shown is reduced with sodium borohydride followed by water. Show correct stereochemistry using wedge-dot structures.
In the boxes provided, draw the structures of the cyclic organic products formed in the following reactions.
In the boxes provided, draw the structures of the four intermediates and the enamine product formed in the following reaction. You don’t have to show the important resonance structures.
CAN YOU PLEASE HELP ME ASAP :*(((( with CHEMISTRY Which reacts faster in an SN2 reaction?
I need to know the answers to the question I put in the 'Question Description' box.
Predict the organic products.
Structural formula drawing
Draw the structure(s) of the carbocation intermediate, including resonance contributors, to show why this is the case.
Part A (1 of 1) Draw the curved arrows for Step 2 of this mechanism.
Provide a synthetic pathway, i.e. reaction conditions and expected intermediate compounds, for the following product starting from the suggested molecule. Mechanisms are not necessary
Proton environment and multiplicities
Sn1, Sn2, E1, E2 homework help
In the synthesis of iodosalicylamide from salicylamide, determine the theoretical yield
Solve for the theoretical yield of this prelab
Draw the structure of the major product formed in the reaction of t-butylcyclohexanone and lithium aluminum hydride. Draw the major product formed in the reaction of t-butylcyclohexanone and lithium tri-sec-butylborohydride.
What is the approximate frequency of the most important absorption in the starting material that should be absent in the IR spectrum of the product?
In the 13C NMR of 4-t-butylcyclohexanone, which carbon is responsible for the signal at 212 ppm?
In the 1H NMR of the product of the reduction reaction (4-t-butylcyclohexanol) it is apparent that there is a mixture of 4-t-butylcyclohexanols. In the expanded region between 3.2 and 4.5 ppm, the peak at 4.05 ppm integrates to 1.0, while the peak at 3.52
Categorize the groups attached to the ring in salicylamide as activators, deactivators, ortho/para directors, or meta directors. Predict the product(s) of the reaction .
HNMR spectrum
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