Outline the step-by-step method (initiation, propagation(s), and one termination step) for bromination of 2-bromopropane to produce its major product.
Q: Describe a sequence of reactions by which 3-methyl-1-butyne can be straightforwardly prepared from…
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Q: Suggest short, efficient reaction sequences suitable to produce the compound from the given starting…
A: We have to carry out the required transformation.
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A: The solution is as follows:
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A: Cyclohexene reacts with bromine to make 1,2-dibromocyclohexane.
Q: Outline the synthesis of 1-bromo-2-methylpropane by using suitable alkene
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Q: Suggest the synthetic sequences for the preparation of 2,3-dibromopent-2-ene, from prop-1-yne.
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Q: deduce the bromination reactions of 1-chloro-3-methylcyclohexane and choose the major and minor…
A: Introduction : We have to tell the major and minor products .
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A: Concerted means the bond breaking and bond forming process takes place simultaneously.
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Q: Can you write the bromination mechanism of 2-methylpropane for the formation of the major product?
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A: The solution is as follows:
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Q: Provide the products of the reaction of 1-propene with HBr in the presence and absence of peroxide.…
A: This reaction is known as Markonvikov reaction, Intermediate , Carbocation is formed, more stable…
Outline the step-by-step method (initiation, propagation(s), and one termination step) for bromination of 2-bromopropane to produce its major product.
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- A problem often encountered in the oxidation of primary alcohols to acids is that esters are sometimes produced as by-products. For example, oxidation of ethanol yields acetic acid and ethyl acetate: Propose a mechanism to account for the formation of ethyl acetate. Take into account the reversible reaction between aldehydes and alcohols:Provide the reaction mechanisms and reagents used to carry out the synthesis of this molecule.3-Chloro-2-methylpropene reacts with sodium methoxide in methanol to form 3-methoxy-2-methylpropene. For each of the following changes in the reaction conditions, state whether the reaction rate would increase, decrease, or remain the same. Explain your reasoning. In some cases the identity of the major organic product would be expected to change; in such cases, give the expected major product. (a) the same quantities of reagents are dissolved in half the volume of methanol (b) 3-bromo-2-methylpropene is used in place of 3-chloro-2-methylpropene (c) sodium methanethiolate (CH3SNa) is used in place of of sodium methoxide
- Please give the main substitution product for each of the following reactions, and indicate the dominant mechanism: (a) 1-bromopropane + NaOCH3 → (b) 3-bromo-3-methylpentane + NaOC2H5 →Design and draw a catalytic cycle for the production of butanal from prop-1-ene. Recognize which step responsible for the selectivity of formation of the n- or iso-isomer.Predict the products of dehydrohalogenation and dehydration reactions, and use Zaitsev’s rule to predict the major and minor products
- 3-Chloro-2-methylpropene reacts with sodium methoxide in methanol to form 3-methoxy-2-methylpropene. For each of the following changes in the reaction conditions, state whether the reaction rate would increase, decrease, or remain the same. Explain your reasoning. In some cases the identity of the major organic product would be expected to change; in such cases, give the expected major product. (a) dimethyl sulfoxide (DMSO) is used in place of methanol (b) methanol is used by itself without sodium methoxide (c) 1-chloro-2,2,-dimethylpropane is used in place of 3-chloro-2-methylpropeneAlkynes do not react directly with aqueous acid as do alkenes, but will do so in the presence of mercury(II) sulfate as a Lewis acid catalyst. The reaction occurs with Markovnikov regiochemistry, so the OH group adds to the more highly substituted carbon and the H adds to the less highly substituted carbon. The initial product of the reaction is a vinyl alcohol, also called an enol. The enol immediately rearranges to a more stable ketone via tautomerization. Draw curved arrows to show the movement of electrons in this step of the mechanism. Arrow-pushing Instructions -X티 Hö: H-O -CH3 -CH3 H30*When 2-bromo-2-methylbutane is treated with a base, a mixture of 2-methyl-2-butene and 2-methyl-1- butene is produced. When potassium hydroxide is the base, 2-methyl-1-butene accounts for 45% of the product mixture. However, when potassium tert-butoxide is the base, 2-methyl-1-butene accounts for 70% of the product mixture. What percent of 2-methyl-1-butene would be in the mixture if potassium propoxide were the base? base Br A. Less than 45% B. C. 45% Between 45% and 70% D. More than 70%
- (a) In an acid-catalyzed hydration, one of the following 10 carbon alkynes is expected to produce a single hydration product? Select the correct alkyne and draw the structure of the hydration product that is formed from this alkyne. (I) 2-decyne; (II) 3-decyne; (III) 4-decyne; (IV) 5-decyne; (V) none of these will give a single hydration product. (b) The reaction shown below gives Compound X as the major product. The mass spectrum of X is shown. Br2, H20 Compound X 100 - MS-IW-5644 80 60 40 - 20 - 20 40 60 80 100 120 140 160 180 200 220 m/z Considering the reactions of alkynes and the MS data, de duce which of following structures corresponds to X: Br Br HO, IV V I II II Support your answer with a reaction mechanism for fomation of X and identification of relevant peaks in the mass spectrum. 12 Relative IntensityTwo substitution products result from the reaction between 3-chloro-3-methyl-1- butene with sodium acetate (CH3COO – Na +) in acetic acid under SN1. Identify the products.Heterocyclic compounds can undergo nitration reactions with some regioselectivity, giving products in majority. From the following reaction give the raw material from which it is formed and the mechanism under which the transformation takes place.