What is the major product of the following E2 reaction? CH₂ of CH₂- CH₂ CH-CH-CH CHS __ CH₁ CH₂ CI -CH₂-CH₂ CH₂ OA CHỊ=CHCH-CCHCH3 H CH₁ CH₂ CH₂ A OB. CH₂-CH₂-CH-C=CH-CH₂
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- When (s)-3-bromopent-1-ene is heated in water, which of the following compounds is not produced? A )(S)-pent-1en-3-ol B) ( R)-pent-1-en-3-ol C )pent-4-en-1-ol D)(E)-pent-2-en-1-ol E)(Z)-pent-2-en-1-olBicyclo[2.2.1]heptan-7-one + PCC (in CH₂Cl₂) => A.) Bicyclo[2.2.1]heptan-7-ol B.) Bicyclo[2.2.1]heptanoic acid C.) Cyclohexanecarbaldehyde D.) All the given choices are possible products E.) No reactionThese reagents can produce ketones with alkynes A. BH3, THF, H2O2 B. KMnO4 C. O3 D. H2SO4, H2O, HgSO4 choices:A,DB,CA,B,CA,B,C,D
- Are the following the same? a) trans-2-bromocyclopentanol and 1s, 2s - 2- bromocyclopentan-1-ol b) 3,3-Dichlorocyclobutanecarbaldehyde and 3,3-Dichlorocyclobutane-1-carbaldehydeThe stereochemistry of the products of reduction depends on the reagent used, with this in mind, how would you convert 3,3-dimethylbutan-2-one [CH3COC(CH3)3] to: (a) racemic 3,3-dimethylbutan-2-ol [CH3CH(OH)C(CH3)3]; (b) only (R)-3,3- dimethylbutan-2-ol; (c) only (S)-3,3-dimethylbutan-2-ol?What is the major E2 elimination product formed from each alkyl halide?
- 1a) What’s the product in the following reaction? a. 4 b. 1 c. 2 d. 5 e. 3 1b) What reagents would you use to prepare product A with good yield? a. CH3CH2CH2CH2I; 2) Li, NH3 (liq), -33 °C b. KNH2; 2) CH3I; 3) H2, Pd/C c. HBr; 2) (CH3CH2CH2CH2)2CuLi d. NaNH2; 2) CH3CH2CH2CH2Br; 3) H2, Lindlar catalyst e. (CH3CH2CH2CH2)2CuLi; 2) H2, Lindlar catalystWhen 2-bromo-3-phenylbutane is treated with sodium methoxide, two alkenes result (by E2 elimination). The Zaitsevproduct predominates.(a) Draw the reaction, showing the major and minor products.(b) When one pure stereoisomer of 2-bromo-3-phenylbutane reacts, one pure stereoisomer of the major product results.For example, when (2R,3R)-2-bromo-3-phenylbutane reacts, the product is the stereoisomer with the methyl groups cis.Use your models to draw a Newman projection of the transition state to show why this stereospecificity is observedWhen 2-bromo-3-phenylbutane is treated with sodium methoxide, two alkenes result (by E2 elimination). The Zaitsevproduct predominates.(a) Draw the reaction, showing the major and minor products.(b) When one pure stereoisomer of 2-bromo-3-phenylbutane reacts, one pure stereoisomer of the major product results.For example, when (2R,3R)-2-bromo-3-phenylbutane reacts, the product is the stereoisomer with the methyl groups cis.Use your models to draw a Newman projection of the transition state to show why this stereospecificity is observed.(c) Use a Newman projection of the transition state to predict the major product of elimination of (2S,3R)-2-bromo-3-phenylbutane
- What is the most probable elimination product when 4-chlorocyclohexene is reacted with alcoholic KOH? 1,3-cyclohexadiene 1,4-cyclohexadiene Cyclohexane CyclohexeneWhich alkyl halide will react the fastest in an SN2 reaction (CH3)3CI CH3CH2Br CH3CH2I CH3I CH3BrWhich set of reagents are most likely to affect the E2 elimination? a. CH3CH2O-, CH3CH2OH b. (CH3)3CO-, (CH3)3COH