What are the possible products for (R)-4-bromo-1-hexene when reacted with a) Br2 in DCM and b) NBS in water and DMSO. Assign the stereochemistry and if there is more than one product, describe their relationship.
What are the possible products for (R)-4-bromo-1-hexene when reacted with a) Br2 in DCM and b)...
chap 8 test prep
Show the possible products for each reaction: a) Br2 in DCM & b) NBS in water + DMSO. ASsign stereochem in the product(s). If more than one product, describe their relationship. CHз CHaCH-CH3DCCH,CHа f 2 pat ll Scitz 2prusts A Y whieh is Mast stebie 1-east Staste NO 1B/2 t E/2
4. When 2-bromo-1-phenylbutane is reacted in methanolic sodium methoxide, one might expect to see two products. However, only one product is formed to an appreciable extent. a. Write a detailed reaction scheme b. Write a detailed mechanism. c. Explain why only one of the possible products is formed to appreciable extent.
Draw the product(s) of the reaction when methylcyclohexene is reacted with Br2 in the presence of light source. If more than one product forms label the major product. (3 pts) 3. Br hv a. Provide a curved arrow mechanism for the initiation step. (2 pts) Provide a curved arrow mechanism for the propagation steps. Be sure to show any resonance structures. (5 pts) b. 4. Show the product of the following reaction, including stereochemistry. (32 pts) on + HOO c...
4. (5 points) When 3,6-dimethylcyclohexene is reacted with dry gaseous HBr, one of the products is 1- bromo-1,4-dimethylcyclohexane. Provide a detailed step-by-step mechanism to explain the formation of this product
1. a) Draw the structure of 3-hexene, circling all allylic hydrogens. b) Draw the structure of 3-hexene again, this time circling all vinylic hydrogens. 2. a) Draw the structure of chlorofornm b) What do you imagine the structure of bromoform might be? 3. Show the steps necessary to convert propyne into cis 6-methyl-2-heptene. 4. Write in the product(s). Include stereochemistry where relevant. Label major and minor products CH3 CH3 a) CH3 NBS CH3 hu b) NaCECH (R) CH3CH2CH2CHDBr (D -...
3. When 1-bromo-1-phenyl-ethane is heated in ethanolic potassium ethoxide, the major product is styrene. a. Write a detailed reaction scheme. b. Write a detailed mechanism using the standard conventions 4. When 2-bromo-1-phenylbutane is reacted in methanolic sodium methoxide, one might expect to see two products. However, only one product is formed to an appreciable extent, a. Write a detailed reaction scheme b. Write a detailed mechanism. c. Explain why only one of the possible products is formed to appreciable extent
on (R)-1-bromo-2-methylbutane undergoes substitution when reacted with sodium iodide (Nal) in acetone. Choose the major product obtained from this reaction. A (R)-1-iodo-2-methylbutane B (S)-1-iodo-2-methylbutane C racemic 1-iodo-2-methylbuta D (R)-1-bromo-2-iodobutane E (S)-1-bromo-2-iodobutane F (S)-1-sodium-2-methylbutane Enter Your Answer: OA OB OC OD OE OF B Incorrect
Answer all parts. (a) Give the structure of the major possible products (if any) when the following reagents are treated with Brz. [6 marks (i) Br2 + CH4 (in the dark) → (ii) Br2 + CH4 (in the presence of light, hv) ► (iii) Br2 + CH3CHCHCH3 → (iv) Br2 + CH3CCCH3 → (v) Br2 + C H10 (cyclohexene) → (vi) Br2 + C H (in the presence of FeBr3) ► (b) Briefly explain what a combustion reaction is by...
Draw the major organic product from reaction of 1-butyne with 1 equiv Br2 Specify stereochemistry when it is relevant. In cases where there is more than one answer, just draw one. • Do not draw inorganic by-products. • If no reaction occurs, draw the organic starting material. OOO.
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12. Ignoring stereochemistry, what are all of the possible maior and minor products produced from the free radical bromination of the following alkene 1. 4-bromo-2-methyl-2-pentene NBS 2. 3-bromo-2-methyl-1-pentene 3. 1-bromo-2-methyl-2-pentene ROOR 4. 4-bromo-4-methyl-2-pentene 5. 2-bromo-4-methyl-3-pentene A) 1,2,3,4 B.2,3,4,5 c. 1 and 5 D. 1,3, and 4