Provide the complete arrow-formalism mechanism for the following conversion. Following your mechanism, draw the complete reaction coordinate diagram. HO L CH3 CH3 aq H2SO4 CH3 A -CH3 CH3
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- 4) Draw the complete electron-pushing arrow mechanism for the following reductions. Explain, using resonance contributors, the regiochemistry that results in each case. ỌMe Na, MeOH ? NH3 CHO Na, MeOH ? NH31. Give IUPAC names fro the following alkyl halides: (a) CH3CH2CH2CH2I (b| (c) CH3 CH3 CH3CHCH2CH2CI BrCH2CH2CH,CCH28 ČH3 (d) CH3 le) ! CH,CH2CI (d) Br CI CH3CH2CH2CI CH3CHCHCH2CH3 CH3CHCH2CH2CHCH3 CI1) Draw the complete electron-pushing arrow mechanism for the following reductions. Explain, using resonance contributors (structures), the regiochemistry that results in each case. OMe Na, MeOH ? NH3 CHO Na, MeOH ? NH3
- CH3 CH3 CH3 CH;=ĊCH,CHCH;OH H2SO4, H3C H3C Referring to the above reaction: 1. Which atom does the H2SO4 first remove? 2. Identify the reaction if it's hydrogenation, hydrohalogenation, etc. 3. Propose a mechanism for the reaction, using the arrow formalism to indicate the flow of electrons.Complete the curved arrow mechanism for this reaction including the charges where necessary CO,Me H HO, ÖH2 CO,Me CO,Me O2N- NO2Draw curved arrows to show the movement of electrons in the step of the mechanism shown below. Arrow-pushing Instructions X→UU :0: :O: || CH3-C-CH₂-C-OEt :OEt :O: || :0: || CH3-C—CH—C—0—OEt + EtO: H
- When norbornene undergoes hydroboration-oxidation, a mixture of two stereoisomers is produced in a roughly 6:1 ratio. (a) Draw both of these isomeric products. (b) Which product is favored? Hint: You should build a model of norbornene and consider the transition state leading to each product. 1. BH3 THF ? 2. H2O2, NaOH, H,O NorborneneWhich of the following is not a product of this elimination reaction? (C6H5- is a benzene ring) Cl CH3 | | CH3CH2CH2-CH-CH-C6H5 + CH3CH2OH → CH3 | CH3CH2CH=CH-CH-C6H5 CH2 || CH3CH2CH2CH2-C-C6H5 CH3 | CH3CH2CH2CH2-C=C6H5 C6H5 | CH3CH2CH2CH2-C=CH2 CH3 | CH3CH2CH2CH=C-C6H51-Ethoxypropane is: O CH3CH₂OCH₂CH³ Ⓒ CH³CHCH₂OCH3 O CH3CH₂CH₂CH₂CH3 O CH3CH₂CH2CH2CH₂CH3 OCH3CH₂CH₂CH₂OCH3
- Complete the following: Stereochemistry, enantio-, and regioselectivity are important. CrO3, H2SO4 a) OH Bromination of an alcohol (Sn2) type EtO₂C CO₂Et b) b) d) H3CO type NH2 a) b) H3CO type a) b) OH g) type CN CI h) acetone Swern Oxidation type type CO₂H type Доно i) Me3SICI, Imidazole OSiMe3 Et3N, CH2Cl2 Br type a) Mg°, THF Br j) b); H3O+ H2SO4 (H+) MeOH OMe type typeTetraalkyl ethanes prefer to be in gauche conformations. However 1,1,2,2-tetraphenyl ethane is anti. Explain.Below is a mechanism that represents the following single reaction sequence: a certain alcohol undergoes acid- catalyzed dehydration (conversion that involves the loss of water from the reacting molecule or ion) to form an alkene product. Write the IUPAC name of the product. Include E/Z stereochemistry. Hint: Name of the substituent of the product is similar to that of reactant.