Draw a structural formula for the major product of the reaction shown. Br2 =CHCH2CH3 H20 • Show product stereochemistry IF the reactant alkene has both carbons of the double bond within a ring. • Do not show stereochemistry in other cases. • If the reaction produces a racemic mixture, just draw one stereoisomer.
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- These are synthesis questions. You need to show how the starting material can be converted into the product(s) shown. You may use any reactions we have learned. Show all the reagents you need. Show each molecule synthesized along the way and be sure to pay attention to the regiochemistry and stereochemistry preferences for each reaction. If a racemic molecule is made along the way, you need to draw both enantiomers and label the mixture as "racemic".Consider a reaction where cis-but-2-ene is treated with OsO4 followed by NaHSO3/H2O. Draw the structure of one product that is formed in the reaction, including correct stereochemistry.Draw the product or products that will be obtained from the reaction of cis-2-butene and trans-2-butene with each of the following reagents. If a product can exist as stereoisomers, show which stereoisomers are formed. 1. HCl. 4.Br2 in CH2Cl2 7. H2O + H2SO4 2. BH3/THF, followed by HO-, H2O2, H2O 5. Br2 + H2O 8. CH3OH + H2SO4 3. a peroxyacid 6. H2 + Pd/C
- What are the reagents used to convert 2-butyne to C4H8? What are the products when that C4H8 is mixed with OsO4, and H2O (the formula will be C4H10O2 racemic)? What is the product when C4H8 is mixed with RCO3H, and H2O (the formula will be C4H10O2 meso)?Consider a reaction where cis-but-2-ene is treated with a peroxy acid followed by OH- /H20. Draw the structure of one product that is formed in the reaction, including correct stereochemistry.Ignoring stereochemistry, draw the alkylborane formed from the addition of one equivalent of BH3 to the alkene. The alkylborane formed in Part 1 is further treated with H2O2 and HO−. Draw the two stereoisomers of the final product of the reaction. Include stereochemistry where relevant. How many stereocenters are formed from the reaction? What is the relationship between the stereoisomers?
- Name (including E/Z stereochemistry) the five alkenes that can produce 3-bromo-3-methylhexane on reaction with HBr. Draw the skeletal structure of each molecule.Complete the following reactions by identifying the major organic product, reagent(s), or reactant. • If the product is a single compound, draw the structure clearly in the box. • List missing reagents neatly around the blue arrows. There may be more than one reagent per arrow. • If the product is a racemic mixture, clearly draw one enantiomer and write "racemic" under the answer.Fill in the missing starting material, reaction conditions, or products for each reaction shown below. Take care to indicate if two sets of reagents have been added sequentially (using 1. ___ and 2.___ above the arrow), and also to show all MAJOR products and indicate stereochemistry. In cases where a pair of enantiomers are produced or stereochemistry is not controlled you can write “+ enantiomer” or use squiggly lines, as appropriate.
- The product of the second synthetic step undergoes tautomerization in aqueous medium to form the final product. Draw the structures for both of these products. 1. Draw the product of the oxidation of the organoborane formed in Step 1. Include lone pairs and nonzero formal charges. 2. Draw the more stable tautomer that is the final product. Include lone pairs and nonzero formal charges.complete the conversion using SN1, SN2, E1, or E2. what is a possible reagent? cyclohexane --> cyclodi-1, 3- eneA hydrocarbon of unknown structure has the formula C8H10. On catalytichydrogenation over the Lindlar catalyst, 1 equivalent of H2 is absorbed. Onhydrogenation over a palladium catalyst, 3 equivalents of H2 are absorbed.(a) How rnany degrees of unsaturation are present in the unknown?(b) How many triple bonds are present?(c) How many double bonds are present?(d) How many rings ar e present?(e) Draw a structure that fits the data.