the sur re(s) 0f In he Cie ical for 5 120. You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right co Separate structures with + signs from the drop-down menu. C P opy aste

the sur re(s) 0f In he Cie ical for 5 120. You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right co Separate structures with + signs from the drop-down menu. C P opy aste

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter39: The Wittig And Wittig-horner Reactions

Section: Chapter Questions

Problem 4Q

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"what is the @difference in strain energies between gauche butane with a 60 degrees dihedral angle and the lowest energy gauche butane\"?To elaborate, what is lowest energy gauche butane? is it anti?
Explain briefly and clearly the following concepts, taking as reference the molecule of n-butane and the corresponding drawings or illustrations. See pages 149-152 of the book Organic Chemistry, sixth edition (J. G. Smith). 4. What is steric hindrance in a conformation? Then draw a picture to illustrate the concept? 5. What is the torsional stress of a conformation? Then draw a picture to illustrate the concept? 6. Describe 1,3-diaxial interaction and illustrate with a specific example.
Write TRUE if the BOLD word/phrase makes the statement correct. Otherwise, write the correct WORD/PHRASE that will make the statement true. If there are two bold words/phrases in a number, write your answer for EACH of the bold words/phrases. 1. The anti-staggered conformation of butane, in which the methyl groups have a dihedral angle of less than 180°, has the highest energy. 2. The formation of 2-methylpropene as side product in the synthesis of tert-butyl chloride is a nucleophilic substitution reaction. 3. The generation of tertiary carbocation is the rate-determining step in tert-butyl chloride synthesis.
How would you draw a structure like (+-)hexane-3,4-diol? What about (+)hexane-3,4-diol or (-)hexane-3,4-diol? Would it be impossible to draw these two because + and - separately are determined via polarimetry and not spatial arrangement?
I need to know the names of these two structurers for my notes but I am not sure how to name them.
Draw the following compound. If, and only IF, the name is inappropriate give the correct name of thecompound and draw 2 isomers of the compounds FROM below, and state the type of isomerism. a.) 3-chloro-4-bromohexaneb.) 2-methyl-3-oxo-5-pentanolc.) 1-octylcycloheptaned.) 1-bromo-6-chloro-5-phenole.) 1-octanone
1,4-Pentadiene (CH2=CH-CH2-CH=CH2) is a liquid at room temperature and has a density of 0.66 g/mL and molar mass of 68.12 g/mol. In a laboratory experiment, 3.80 mL of this compound was treated with 4.80 mL of conc. H2SO4 (100% w/w; molar mass 98.08 g/mol). Note that the density of conc. H2SO4 is 1.84 g/mL. The resulting sulfate ester was then treated with 1.20 mL of water (molar mass 18.02 g/mol) affording, after work- up, 2,4-pentanediol (molar mass 104.15 g/mol) as the crude product. The crude product was then purified by simple distillation, which yielded 2.00 g of pure product. What is the theoretical yield of 2,4-pentanediol expressed in grams? Show calculations. What is the percentage yield of pure 2,4-pentanediol?
1,4-Pentadiene (CH2=CH-CH2-CH=CH2) is a liquid at room temperature and has a density of 0.66 g/mL and molar mass of 68.12 g/mol. In a laboratory experiment, 3.80 mL of this compound was treated with 4.80 mL of conc. H2SO4 (100% w/w; molar mass 98.08 g/mol). Note that the density of conc. H2SO4 is 1.84 g/mL. The resulting sulfate ester was then treated with 1.20 mL of water (molar mass 18.02 g/mol) affording, after work- up, 2,4-pentanediol (molar mass 104.15 g/mol) as the crude product. The crude product was then purified by simple distillation, which yielded 2.00 g of pure product. a. Provide a balanced chemical equation to show the reaction between 1,4-pentadiene and sulfuric acid. Do not use molecular formulas in the chemical equation except for sulfuric acid. b. What reactant is the limiting reagent in this chemical equation? Show calculations to support your answer.
Use bond-dissociation enthalpies to calculate the AH° for each of the following reactions. CH3CH2CH3+H2 → CH3CH3+CH4 CH3CH2CL+HI → CH3CH2I+HCI
For each pair, give the relationship between the two compounds. Making models will be helpful.(a) (2R,3S)-2,3-dibromohexane and (2R,3R)-2,3-dibromohexane
For the cyclohexane structures shown below, draw both chair structures for each and identify which is lower in energy (briefly explain why).
C6H5CO2CH2C6H5 can be synthesized by an SN2 reaction. Draw the structures of the alkyl chloride and nucleophile that will give this compound in highest yield. Use the wedge/hash bond tools to indicate stereochemistry where it exists. Include all valence lone pairs in your answer. Separate multiple reactants using the + sign from the drop-down menu. When a metal counterion is needed, use Na+, but draw it in its own sketcher.