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- Chemical Reactions: Give the product/s of each chemical reaction 1. Reaction of this alkene to the different reagents written above and below the arrows. ¡ HBr10) Synthesis: Make the following products from a suitable cyclic alkene starting material. Look at the functional group PATTERN present in the molecule, including stereochemistry. ♡ Br Br8. a) b) Provide structure(s) for the starting material(s), reagent(s) or the major organic product(s) of each of the following reactions. OEt COOH CH3 CH; 0 OH 1. LiAlH4, ether 2. HO OH ند (CH3COO NaOH, H₂O 5 CH 3 Cl
- Give the major organic product(s) of the following reaction. OH 1) CH3CH2M9B (1 mole) ? H. 2) H30* CH,CH, OH OH OH OH OH OH OH OH OH H. There is no reaction under these conditions or the correct product is not listed here.5A In the following reactions, mixtures of alkenes and ethyl ethers are formed. Draw their structures. Explain which is or are likely to be the main product(s) in each reaction. In case of formation of two isomers of alkenes, explain which is formed in greater proportion CH3 ofi H3C- -Br CH3 EtOHCH3 CH3 Br- Br2 .CH3 CH2Cl2 CH3 H3C H3C Br Electrophilic addition of bromine, Brɔ, to alkenes yields a 1,2-dibromoalkane. The reaction proceeds through a cyclic intermediate known as a bromonium ion. The reaction occurs in an anhydrous solvent such as CH,Cl,. In the second step of the reaction, bromide is the nucleophile and attacks at one of the carbons of the bromonium ion to yield the product. Due to steric clashes, the bromide ion always attacks the carbon from the opposite face of the bromonium ion so that a product with anti stereochemistry is formed. Draw curved arrows to show the movement of electrons in this step of the mechanism. Arrow-pushing Instructions CH3 CH3 CH3 CH3 H3C H3C :Br: :Br:
- 1. Reaction of 2,3-dimethyl-1-butene with HBr leads to an alkyl bromide, C6H13Br. On treatment of this alkyl halide with KOH in methanol, elimination of HBr occurs and a hydrocarbon that is isometric with the starting alkene is formed. What is the structure of this hydrocarbon and how do you think it is formed from an alkyl bromide? 2. 1-Octen-3-ol is a potent mosquito attractant commonly used in mosquito traps. A number of reactions, including hydrogenation, will transform 1-Octen-3-ol into a less effective molecule. Write a complete reaction equation for the hydrogenation of this alkenol.10) Synthesis: Make the following products from a suitable cyclic alkene starting material. Look at the functional group PATTERN present in the molecule, including stereochemistry. Br CH3 Br CH31. Consider the following reaction - Dehydrogenation of Methyl Cyclohexane (MCH) to Toluene (TOL) using a Precious Metal (Pt) supported on Alumina. CH3 CH3 2 () + 3 H₂ Typically, hydrogenation of a cyclo-alkane, like MCH, occurs in 3 or more stages, where one bond is dehydrogenated per stage, eventually resulting in the dehydrogenation of 3 bonds. Strong adsorption of MCH is likely to occur, but the adsorption of hydrogen (either as a molecule on a single site OR as an atom on a single site) is unclear. Therefore, in this question, two types of reaction mechanisms are to be considered, as discussed below: (a) You are to first propose a reaction mechanism which includes adsorption, surface reaction, and desorption. For each of the following cases, please write down a full set of elementary reaction mechanisms. (0) Extraction of Hydrogen in 3 stages, based on dehydrogenation of each bond-where the ensuing hydrogen product is adsorbed as a molecule on a single site, in one step.…
- Chemical Reactions: Give the product/s of each chemical reaction 1. Reaction of this alkene to the different reagents written above and below the arrows. 7 Cl₂ HBr 1. Os04 2. HIOA NBS H2O, DMSO H₂ Pt7) You want to synthesize 3-methyl-2-pentene from 2-chloro-3-methylpentane. Which reagent would you use? a. HCI, heat b. NH:(aq), 25°C c. CH:CO2NA, CH:CO2H, heat d. CH3CH2ONA, CH3CH2OH, heat e. CН:CH2ОН, heat7. Reaction product of 3-methyl-butene with hydrochloric acid:a) 2-methyl-3-chlorobutaneb) 3-methyl-3-chlorobutanec) 2-chloro-3-methyl butaned) 2-chloro-2-methyl butane 8. What type of reaction takes place when CO2 + H2O and energy are obtained from 3-methyl butyne?a) Hydrogenationb) Halogenationc) Partial oxidationd) Total oxidation
