2. Write the structures of all the alkenes formed from the E2 elimination of HX (dehydrohalogenation)...
i am done with mine but i do need an answer key to check my work. can you help? thank you Organic Chemistry I Worksheet Due 10/28/19 Predict the alkene product or products formed by sodium methoxide [NaOCHs] promoted dehydrohalogenation (- HX) of the following compounds. In each case, predict which product will be the major product. 1. 2-bromobutane A. 3-chloropentane В. Predict the product or products formed by potassium tert-butoxide [KOC(CH3)s] promoted dehydrohalogenation of the following compounds. In each...
For the following dehydrohalogenation (E2) reaction, draw the Zaitsev product(s) resulting from elimination involving C3-C4 (i.e., the carbon atoms depicted with stereobonds). Show the product stereachemistry clearly. If there is more than one organic product, both products may be drawn in the same box. Ignore elimination involving C3 or C4 and any carbon atom other than C4 or C3. KOH EtOH/heat
(6) Draw the structures of the three elimination products formed in this reaction. Circle the most stable product formed. Is this mechanism of type E1 or E2? H3PO4 OH heat
1. Draw all constitutional isomers formed in the elimination reaction and predict the major product using the Zaitsev rule. A . KOCICH ! KOC(CH) 2. Draw all possible elimination reaction product(s) for the following alkyl halide. 4. Classify the following alkenes as mono, di-, tri, or tetra- substituted alkenes. Then, circle the most stable one. thayo by my 5. Which of the following alkenes is more stable?
(a) When cis-1-bromo-2-methylcyclohexane undergoes an E2 reaction, two products (cycloalkenes) are formed. What are these two cycloalkenes, and which would you expect to be the major product? Write conformational structures showing how each is formed. (b) When trans-1-bromo-2-methylcyclohexane reacts in an E2 reaction, only one cyclo- alkene is formed. What is this product? Write conformational structures showing why it is the only product.
8. Explain why the following deuterated 1-bromo-2-methylcyclohexane undergoes dehydrohalogenation by the E2 mechanism to give only the indicated product. Two other alkenes are not observed CH3 (CH, Br OCH, -CH Сн, H DH DH not observed observed
6 Provide the products that will be formed by potassium hydroxide induced dehydrohalogenation of the following cupounds. Please provide major and minor products Show the mechanism that is followed to produce each product a. 3-chloro-1-methylpentane b. 2-bromo-3-methylcyclohexane 7. Review the Infared Spectrum of 2-Decene below. Pay special attention to the 1200 cm' and 3200 cm eion. Identify the "group(s) that gave rise to spec absorbance peaks that are within this region (1200 cm and 3200 chh) 1000
PROBLEM 7-24 1. Predict the elimination products of the following reactions. When two alkenes are possible, predict which one will be the major product. Explain your answers, showing the degree of substitution of each double bond in the products. 2. Which of these reactions are likely to produce both elimination and substitution products? (a) 2-bromopentane + NaOCHz (b) 3-bromo-3-methylpentane + NaOMe (Me = methyl, CH3) (C) 2-bromo-3-ethylpentane + NaOH
PROBLEM 7-24 1. Predict the elimination products of the following reactions. When two alkenes are possible, predict which one will be the major product. Explain your answers showing the degree of substitution of each double bond in the products. 2. Which of these reactions are likely to produce both elimination and substitution products? (a) 2-bromopentane + NaOCH3 (b) 3-bromo-3-methylpentane NaO (c) 2-bromo-3-ethylpentane NaOH Me (Me= methyl, CH3)
The reaction below proceeds via an E2 elimination to provide 2 different alkenes. Using a Newman projection explain the product ratio Br KOtBu in KOIBU 51% 18% Draw the lowest energy conformer of each of the 5 compounds. NC For each of the reactions below write the necessary reagent to carry out the transformation -OTBS -OTBS OPMB 0 OPMB Tro? ОН OMOM OTBS OTBS OPMB TroY0 OH Tro OMOM OMOM OTBS OTBS OPMB Tro OH omom OMOM -OTBS гон OPMB...