2. Show the structures of the carbocation intermediates you would expect in the following reactions: CH3 CH3 (a) (b) CHCH3 HI HBr CH3CH2C=CHCHCH3 3. What product would you expect to obtain from addition of Br2 to 1,2-dimethyl- cyclohexene? Show the cis or trans stereochemistry of the product.
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- 4. What are the products obtained from the following elimination reaction? Indicate the major product. CH3 CH,CH,ČCH, H2O 5. a) Determine the major product that is formed when the alkyl halide reacts with a hydroxide ion in an elimination reaction. CH;CH,CH,CH,CCH, Br b) For the major elimination product obtained in 5a), which stereoisomer (cis or trans) is obtained in greater yield? Draw the two isomers and provide the names of the compounds.a Draw the structure of the intermediate (I) for the reaction below. Hg(O2CCH3)2 NaBH4 Product CH;OH H3C • Use the wedge/hash bond tools to indicate stereochemistry where it exists. If the reaction produces a racemic mixture, just drawv one stereoisomer.1. Assign E or Z to the following alkenes. If the alkene does not have stereochemistry, write "NONE". H CI H3C SH T. H CI, ОН H3CH2C НО D D EN C(CH3)3 CH3 Me H Et N' 'N' C=C H3C Et Me what Columbus sought in the 'Indies' - Piperine CH2OH Br (H3C);C, H3C HOH, CH,CF, H3C Br HOH2C НО H the spice Columbus found (Capsaicin) HO. Muscalure Bombykol (the sex attaractant for the male silkworm) (the sex attaractant for the common housefly) OH .CO2H the "heart healthy" part of olive oil a 'less healthy' trans fatty acid from trans fat
- Questão 10A certain hydrocarbon had the molecular formula C16H26 and contained two triple bonds. Ozonolysis resulted in CH3(CH2)4CO2H and HO2CCH2CH2CO2H as the only products. What is the reasonable structure for this hydrocarbon? Hexadec-6,10-dino undec-1,5-dino Hept-1,5-dino hex-1,5-dino nahnent/takeCovalentActivity.do?16cal assigi [Review Topics] [References] Use the References to access important values if needed for this question. Draw a structural formula for the major organic anion formed when 2- ethylbutanal is reacted with Tollens' reagent. You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. • If no reaction occurs, draw the organic starting material. P. opy aste CH4 ChemDoodle Previous NexKelerences Keview topic Draw a structural formula for the major product of the reaction shown. Cl2 H20 CH;CH2CH;CH=CHz • 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. 2reg 2reg M) ots 2reg pts 2req 1 pts 2req 1 pts 2reg ...1 pts ChemDoodle Previous Next> Save and Exit APR tv MacBook Air 80 DII DD F3 F4 FS F6 F7 F8 F10 F1 F12 #3 $ & + 3 4 6. 7 8 %3D dele E Y | { } P [ F G H. J K C V N M ? .. .. * C0 B
- Draw a structural formula for the major organic product of the reaction shown below. C(CH3)3 CH2 + ether H3O + CuLi H3C 2 • You do not have to consider stereochemistry. + - 4 √n [ ? ChemDoodle Ⓡ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.When the alkene A was treated first with Hg(OAc)2 in MeOH and second with NaBH4 the product was the ether B. Using curved arrows please give the mechanism for the first step of (Hg(OAc)2 in MeOH) this reaction, including any regioselectivity or stereoselectivity. H3C 1. Hg(OAc)2, MeOH H3C O-CH3 =CH2 ✓ -CH3 H3C 2. NaBH H3C A B
- 3. Two substitution products result from the reaction of 3-chloro-3-methyl-1-butene with sodium acetate (CH:CO2 Na*) in acetic acid under SN1 conditions. Identify the products. (Hint: Resonance form) Please predict the products in the following reactions. (Hint: Stereochemistry!!) CH,CH3 SN2 conditions + НО- CH3 Br (S)-2-bromobutane CH,CH3 SN1 conditions + H,O CH3 Br (S)-2-bromobutane 4.Elimination reactions of cis- and trans-1-bromo-2-methylcyclohexanes with Eto in ETOH could potentially give the two products, 1-methylcyclohexene (1) or 3-methylcyclohexene (2). Which answer (a-d) indicates the major products for each reaction? Br „Br EtO Eto "CH3 ELOH `CH3 *CH ELOH "CH3 cis trans Select one: a. 2 from the cis and 1 from the trans substrate b. 2 both from the cis and trans substrates c. 1 both from the cis and trans substrates d. 1 from the cis and 2 from the trans substrateH3C N- H₂NNH₂ H⭑ CH3 H3C IN CH3 Hydrazine reacts with 2,4-pentanedione to yield 3,5-dimethylpyrazole. Including protonations and deprotonations, the reaction takes 12 steps. Write out the mechanism on a sheet of paper and then draw the structure of the product of step 6. • You do not have to consider stereochemistry. •You do not have to explicitly draw H atoms. • Do not include lone pairs in your answer. They will not be considered in the grading. • In an elimination step, include the structure of the leaving group, but draw it in its own sketcher. Separate structures with + signs from the drop-down menu. ? Sn th Previous Next