Choose the best option for the immediate nucleophile precursor to 2-methylbutane. A G LiCu LiCu 2 E BrMg electrophile nucleophile B 2 LiCu D (CH3CH2)2CuLi 2
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- 33) Complete the following reactions H₂ Wilkinson's catalyst H₂ Ni₂B H₂/Pd Lindler catalyst H₂ Li, Liq. NH3, -78 C NH4ClHere is the same figure as in the previous two questions, but omitting the red circles. Cys157 Cys157 Cys157 His296 His296 His296 LOH HN HN HN N? -CO2 CH2 Asn329 Asn329 Asn329- Cys157 His296 LOH HN H HyC. Asn329 Which of the following roles is played by the imidazole side chain of His296? Pick the one best [ Select ] answer.Can you explain the mechanism for this question HO OH H2SO4 cat. H₂O
- 6. Predict the reactant (starting material) for the reaction and propose a mechanism. NaCN SN2 NaOH E2 CN a Ph PhConsider the mechanism for the given nucleophilic substitution reaction. X 2H₂0Identify the most likely intermediate in the mechanism leading to the product. НО НО НО. НО OH OH OH OH eTextbook and Media НО НО. Но OH OH _ОН НО. OH
- What is the reaction condition that could be employed to switch the major process between substitution and elimination mechanisms? O Concentration of the nucleophile/base O Proticity of the solvent O Polarity of the solvent Concentration of the substrate O TemperaturePropose a plausible mechanism for the followng reaction INa, NH3 (liq) 2 NH CIHow might nucleophilic catalysis work?Draw out a possible mechanism.
- ton Draw the mechanism for each reaction ་ 1. он MAJ 2. Ugot 1.-04 2. H₂0 HO Nu HO OH HO 244 S Explain why these reactions produce different products. Reference mechanisms in in your answer. yourIf the concentration of the electrophile were decreased, which reaction rate(s) would be expected to decrease? .Br N3 N3 1 Br CH,SO Br 2 Br SCH3 Br OH H20 + Br 3 2 only 1, 2 1, 2, 3 O 2, 3 O 3 onlyBelow is the equation for a nucleophilic substitution reaction and some experimental data. CH3CH2Br + CH3COO- ⇌ CH3CH2CO2CH3 + Br- Rate = k [CH3CH2Br][CH3COO-] Which mechanism would best fit the data?