SA) which of the following nucleophiles would be the most likely to be selective for 14-addition (conjugate addition)? OF, CH 30, CH3SH, CH3 Li □ 5B) Give the product of the conjugate addition of the nucleophile selected to 2-Cyclohexenone, with ethanol as solvent. nucleophile ethanol You Just
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- Identify (label) the electrophile and the nucleophile in the reaction and add curved arrows to the following polar reactions to show the flow of electrons:TReferences] Indicate, by letter(s), the position(s) on the ring at which substitution occurs when the aromatic compounds shown undergo bromination with Br, FeBr3 (when necessary). .H CN HO19. Provide the major organic product of the following reaction. Be sure to indicate proper regiochemistry and stereochemistry if necessary. HO₂C CO₂H A Sen Actual Size (4
- 1. (cont.) CH3 Cl- -CF3 CH;NH2 (i) H ОН ČH,CH3 CH, 1. PBr,/pyridine (j) ОН 2. NaOH/DMSO 2. Using the given starting material and any necessary reagents indicate how the following syntheses can be carried out. ОН CH;CH,CHCH3 CH,CH,CH,COH OH CH;CH,CHCH3 CH;CH,C=CH .OTS OCH3 CH3 CH3 ОН 3. Propose a mechanism that accounts for the formation of the product shown during the following observed reaction. Be sure to show all intermediates. ОН H+19 Ⓒ) (Care.) 50.3 /H₂ SO4( Oxer) .... ? ← defeck 1₂.0+ / heat B 1 which of the following hatides will not work as electrophile in a Friedel - crafts altylation reaction ? Br Br (1) 1 # Br Jor T TE NWhich of the following best describes a key step in the mechanism for the reaction below? HO, ... -CH3 -CH3 + en dihydroxylation H3C- H3C- OH (A) free-radical substitution at the carbonyl carbon B elimination reaction by abstraction of a beta-hydrogen nucleophilic attack by an alkene to form a cyclic (epoxide) intermediate electrophilic addition reaction to form a carbocation intermediate
- which one is more nucleophilic CH3CO2- or -OH? Does it have anything to do with resonance or bulkyness (sterically hindered)??Draw the major organic substitution product or products for (2R,3S)-2-bromo-3-methylpentane reacting with the given nucleophile. Clearly drawn the stereochemistry, including a wedged bond, a dashed bond and two in-plane bonds at each stereogenic center. Omit any byproducts. Br CH;CH20 (conc.) H.Show a possible mechanism for the following reaction 1) EtMgBr (еxcess) 2) H20 Et OH Me •Me "Et w..
- Which of the following nucleophiles will NOT do conjugate addition with an a, f-unsaturated ketone? isopropanol CH;CH,NH2 (CH3),CH-MgBr enolateArrange the structure on the image with regard to the reactivity towards nucleophilic acyl substitution 1 being the least and 3 being the mostGive the reaction mechanism for both subparts in clear handwritten paper!