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4. (20 marks) Predict the structure of all species or reagents in red. Clearly indicate stereochemistry...
Predict the structure of all species or reagents in red. Clearly indicate stereochemistry when relevant. Me Me Me Me mCPBA intermediate - product SO3 H2SO4 intermediate intermediate AICI3 1. N2H4 2. KOH/H20 H2SO4, H20 final product intermediate NaCN HCN intermediate final product FeCl3 NH2 1. Reagents 2. Reagents
4. Predict the structure of all species or reagents in red. Clearly indicate stereochemistry when relevant.5. The Wolff-Kishner reduction is a method to transform ketones into alkanes. An example is provided below. However, all steps and all electron-pushing arrows are not clearly illustrated in this mechanism. Propose a detailed mechanism with all electron-pushing arrows for both steps of the Wolff-Kishner reduction. Notice the first step is carried out in the absence of acid or base – it may involve formation...
8. Predict the major product or products for the following reactions. Assume reagents are present in excess amounts unless otherwise indicated. Clearly depict any stereochemistry. "No Reaction is a possible answer. (4 points) each So, H2SO4 CH,CH,C1 AICI, NO Br2 FeBry OH 어 CI AICI, FeB NOH 100 °C 2.HO die HCI HO
1. Predict the major product of the reaction. Clearly indicate stereochemistry, if necessary (3 pts) Ph H2 Lindlar cat Me hexanes 2. Provide reagents to achieve the shown multi-step transformations (6 pts) an MO
1. Predict the major product of the reaction. Clearly indicate stereochemistry, if necessary (3 pts) Н.С. Me 1. 9-BBN-H THF 2. NaOH H2O2 Me 2. Provide reagents to achieve the shown multi-step transformations. (6 pts) H Ph OH Ph. Br Br
1. Predict the major product of the reaction. Clearly indicate stereochemistry, if necessary (3 pts) Ph H2 Lindlar cat. hexanes Me 2. Provide reagents to achieve the shown multi-step transformations. (6 pts) Br CH 3. Draw a detailed arrow-pushing mechanism for the following transformation. (4 pts) OME B OMe Me Me NaOH H2O2 Me Me H
PLEASE HELP FAST!!! 1. Predict the major product of the reaction. Clearly indicate stereochemistry, if necessary (3 pts) H 1.9-BBN-H THE Me Me 2. NaOH H202 2. Provide reagents to achieve the shown multi-step transformations. (6 pts) H Me Me Br Br Me Br Br 3. Draw a detailed arrow-pushing mechanism for the following transformation. (4 pts) Ph Li(0) Ph Ph Ph NH30)
18. Draw the structures of Compound 18a. and 18b. (18 pts), clearly indicate your assignments of all proton resonances (8 pts). Calculate the Unsaturation Index of each compound (4 pts) (30 points total) 30 Unsat. Index = (2C+2-H-X+NY2 = 200 25 e = 2.00 ppm, 4.90 f = 1.27 ppm, 20 720 Compound 18a: C,H,O, singlet, 2H triplet, 3H 127 15 d = 2.66 ppm, a = 7.21 ppm, b = 7.18 ppm, doublet, 2H doublet, 2H C = 4.90...
How to properly solve these elimination and addition reactions Elimination and Addition reactions Purpose: Figuring out the ways that molecules react is the province of the mechanistic chemist. By understanding the mechanisms of reactions, the chemist can manipulate the experimental variables to favor one product over another. This element of control is the province of the synthetic organic chemist. This Workshop continues to explore how we know how molecules react and how this knowledge leads to control of the products....