Draw the structural formula for the reagents and the products for the following reactions. Watch the stereochemistry where appropriate. Indicate the mechanism for each (E1, E2, SN1, SN2).
Draw the structural formula for the reagents and the products for the following reactions. Watch the stereochemistry...
1. Determine whether the following reactions will go through SN1, SN2, E1, or E2 mechanism a. 1-bromobutane + sodium hydroxide b. 2-chloro-2-methylpentane + sodium hydroxide + heat C. 2,3-dimethyl-3-bromopentane + water d. 2-bromobutane + methanol 2. Draw the major product for the following reactions (draw both products if racemic): NaSH DMSO TsO CHA Nal CH, acetone CH,CH,ONa+ ethanol CH,OH/H-0 Solite Nal (1 equiv.) acetone F CH2CH OH 25°C
2. (1.5 pts) Label the following reagents as Good or Poor Nucleophiles AND as Strong or Weak Bases. OK Na SH 3. (1.5 pt) Predict the productts) of the following reactions, if there are multiple products indicate which, if any, is the major product. Be sure to clearly mark the stereochemistry of chiral carbon atoms and draw multiple products if there is more than one stereoisomer that forms. HCI MeOH H2SO H2 Pd/BaSO4 quinoline 4. (3 pt) For the following...
Unambiguously identify the structures of the major products, reactants, or reagents for the following reactions, including stereochemistry when appropriate. Indicate if the reactions undergo E1, E2, SN1, or SN2 mechanism. 1. ?? H2SO4, H20o NaOCH3 CH3OH 2. CI ?? H2SO4, H20 3. t-BuOK t-BuOH 4 CI CN 5. CI XcCH.OH 6. CI
please help! a)asses substrate b) classify reagents (nuc/base, strong or weak) c)solvent used if not indicated d)mechanism type e)major & minor products including stereochemistry & geometry sn1,sn2, e1,e2 Weak nuc 4. xs Nal (SN2 H2O ignore Nuc/base effects of water weakbase good nuc tBuOK (potassium t-butoxide strong base conc. H2SO4 SO I heat HO elimina DONI
(3 pt) For the following reactions: a) Label the substrate (1°, 2°, 3°), reagent (Good/Poor Nu, Strong/Weak Base) and solvent (protic, aprotic). b) Determine what mechanism will predominate (SN1, SN2, E1, or E2). c) Draw the product(s) you would expect to form, paying attention to regioselectivity and stereoselectivity. 4. (3 pt) For the following reactions: a) Label the substrate (1º, 2º, 3º), reagent (Good/Poor Nu, Strong/Weak Base) and solvent (protic, aprotic). b) Determine what mechanism will predominate (SN1, SN2, E1,...
5. Draw the major products of the following reactions: a) (S)-2-Iodopentane + KCN in methanol. b) 2-bromo-2-methylpropane + LIN(CH(CH,),), in THF. c) 2-Chloro-1-ethanol + potassium tert-butoxide (KO'Bu). d) Cis-2-methyl-1-chlorocyclohexane + methanol. e) Potassium tert-butoxide (KO'Bu) and methyl iodide in THF. f) Draw a detailed curved arrow pushing mechanism for reaction 5d above. Draw the reactants cis-2- methyl-1-chlorocyclohexane + methanol, and show each and every electron flow that converts them into the major products.
5. Draw the major products of the following reactions: a) (S)-2-Iodopentane + KCN in methanol. b) 2-bromo-2-methylpropane + LiN(CH(CH3)2), in THF. c) 2-Chloro-1-ethanol + potassium tert-butoxide (KO-Bu). d) Cis-2-methyl-1-chlorocyclohexane + methanol. e) Potassium tert-butoxide (KO-Bu) and methyl iodide in THF. f) Draw a detailed curved arrow pushing mechanism for reaction 5d above. Draw the reactants cis-2- methyl-1-chlorocyclohexane + methanol, and show each and every electron flow that converts them into the major products.
3. For each reaction, draw the structure of the major product(s) including stereochemistry where appropriate. Fill n the box below each arrow with the mechanism(s) that will be followed (SN1/E1, SN2, or E2). For SN1/E1 reactions, draw products for both. NaCN DMF tBuOH 言言言 MeOH * | CH30 CH OH DMSO R-2-bromopentane
4. Predict the products of the following reactions & indicate whether they are most likely to go through an SN2, SN1, E1, or E2 mechanism. NaCN DMSO NaOH CH3OH heat Only one product is formed in the following E2 elimination reaction. Draw an arrow-pushing mechanism for the reaction and provide the correct product structure. Include a 3-D drawing (chair conformation) displaying proper stereochemistry of the transition state to explain formation of only the major product. CH3 •Br NaOCH3 ~"'CHS
V. What are the major products of the following reactions (if any), and the plausible mechanism (SN1, SN2, E1, E2)? Br NaSCH acetone KO'Bu THF, A NaNH2