9. For hydroboration-oxidation, add the H and OH to the appropriate positions, with both regio and stereoconsiderations. A template is being provided, just add all groups to the appropriate positions – the Cl, Me groups,and Et group. Check your notes or pg. 2 above on whether hydroboration is a syn addition or anti addition. Thereis no one and only correct way to do this, but there is only one correct answer. Also, the enantiomer of eachproduct you draw will also form. I'm only asking you to draw one of them.Et1. ВН;, THF1. ВНз, ТHF2. Н2О2, NaOН-MeН2. H2O2, NaOHMe MeMeCI.......The enantiomer will also form.

Hydroboration-oxidation: H and OH added to the syn-addition

Answered: 9. For hydroboration-oxidation, add the…

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter21: Nas: Nucleophilic Aromatic Substitution

Section: Chapter Questions

Problem 2E

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This question has multiple parts. Work all the parts to get the most points. The following reaction occurs in two steps. HI Predict the organic intermediate(s) and product(s), and provide the mechanism for the reaction. a.1 Draw the organic intermediate formed after the first step of this reaction. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. • You do not have to consider stereochemistry. Do not include counter-ions, e.g., Na+, I-, in your answer. • Do not include lone pairs in your answer. They will not be considered in the grading. Ө ? ChemDoodle >
Draw both resonance structures of the most stable carbocation intermediate in the reaction shown. HCI • You do not have to consider stereochemistry. • Do not include anionic counter-ions, e.g., I', in your answer. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. • Separate resonance structures using the + symbol from the drop-down menu.
2. Since both molecules have possible nucleophilic and electrophilic sites, use trial and error to see what happens. Follow the instructions below, and analyze whether the product is reasonable or not. i) Note: In order to not overfill an octet, pi electrons need to become a lone pair. We've practiced this with resonance, now you're going to practice it with chemical reactions. Nuc O NH₂ Elec directly attach to S. Do not overfill octets This product is unreasonable because:
3. Drawing Reaction Mechanism Arrows For the reactions that have TWO starting materials, indicate and label which species is the nucleophile and which is the electrophile. (HINT: Look at the reactants and look at the products to see where bonds form and where bonds break! Using your pK, table and bond polarity predictions will help!) Draw curved arrows to show the movement of electrons for Bond Forming and Bond Breaking in each of the reaction steps Finally, identify and label what type of elementary step is represented for each mechanism -н Name of Elementary Step н-СI: а. Н -H Name of Elementary Step: нс-о-н b. О-н CHз н Н Name of Elementary Step Н-Сі: с O-H CH3 CНз
6. Each of these is an erroneous attempt to show the most likely acid base reaction. a. Briefly explain what is wrong with the reaction/curved arrows as shown. b. Redraw the reaction/curved arrows, correcting all errors, and draw the correct products e. Label your curved arrows with pKa/sign and give a AH... estimate in the box. Rxn A Explanation Conected reaction Rxn B Explanation H Corted reaction ONH₂ Han AH rus
e) What kind of director (ortho/para or meta) is an alkyl group in EAS reactions? Please justify your answer with appropriate chemical drawings and/or resonance structures.
Show full curly arrow mechanims and please talk about regioselctivity/stereoselctivity. Also, define which one is nucleophile, electrophile, base/acid/reducing agent and reaction name. Please draw a new one. Thank you
image one : Draw ALL additional valid resonance forms involving the free radical for Structure A. Do not draw curved arrows or reaction arrows. image two; Draw ALL additional valid resonance forms involving the free radical for Structure B. Do not draw curved arrows or reaction arrows.

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