an E1 mechanism, the H atom is always removed from the carbon next to the carbocation (B position). What rule should be followed to hine which B carbon should be deprotonated and where the alkene will form in the major product of an E1 reaction? Hammond Rule Gibbs Rule Zaitzev Newman's Rule
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- Please explain why this reaction will NOT WORK. NO2 1. HNO3, H2SO4, 2. EtCI, AICI3Consider the reaction and answer the questions that follow. CH-CH2- CH2-I • CH,S° CH3- CH2- CH2-S– CH; + CH3-CH= CH2 Product A Product B O Explain which type or types of mechanisms (Sw1, SN2, E1, and E2) are applicable to this reaction. [") How can you increase the percentage of Product A? [ui) How can you obtain Product B as almost the only product? A. [i] SN2 & E2 [ii] Use better nucleophile [iii Use a non-nucleophilic base B. [i] SN2 & E2 [ii] Use higher Temperature [iii] Use a non- nucleophilic base C. [i] SN2 & E2 [ii] Use lower Temperature [iii] Use a non-nucleophilic base D. [i] SN1 & E1 [ii] Use lower Temperature [iii] Use a non-nucleophilic baseDraw the most stable resonance form for the intermediate in the following electrophilic substitution reaction. _NH2 NH2 Br2 Br • You do not have to consider stereochemistry. • Include all valence lone pairs in your answer. • In cases where there is more than one answer, just draw one.
- Draw the least stable resonance form for the intermediate in the following electrophilic substitution reaction. NO2 _NO2 Br2 / FeBr3 Br • You do not have to consider stereochemistry. • Include all valence lone pairs in your answer. • In cases where there is more than one answer, just draw one. opy asteConsider reactions ‘a’ and ‘b’ shown below, then determine which of A to E is true.OMe O OMe mechanism requires PdCl₂ (cat) A CUCI, O₂ H₂O
- Draw the most stable resonance form for the intermediate in the following electrophilic substitution reaction. CI CI HNO3 / H2SO4 O2N You do not have to consider stereochemistry. • Include all valence lone pairs in your answer. • In cases where there is more than one answer, just draw one.c) NH3 Peaction? d) NH a d. b Question 6 Zaitsev's Rule refers to: how resonance contributors stabilize cations/anions/radicals O which alkene is favored in a product mixture O the stability of carbocation intermediates O the stereochemistry of reaction intermediates/transition states Question 7 Which mechanism(s) feature(s) a single transition state with no intermediate?Considering stereochemistry, draw the resulting E2 elimination product when H. is removed. H a Ho III.... H H₂ I jº ·*||||| H X Ś my è
- In an E2 mediated elimination reaction of an alkyl halide (H-X) using NaOCH3 as base, which of the following statement is not true? O The reactivity order for alkyl halides (RX) is tertiary secondary> primary. O The rate of reaction = k2 (alkyl halide] [NaOCH₂] O The reaction occurs in a single step. O The rate is independent of the leaving group.In the E2 reaction of 2-bromopentane with sodium tert-butoxide, 1-pentene is favored over 2- pentene. It is based on O the size of base used. O the Zaisev's rule. O the strength of the base used. O the Hoffman product. O the stability of alkeneThe Reaction intermediate in the reaction C2H6 Cl2 C2H5CI HCI O Carbanion O Free radical O Carbocation Transition state Next page