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- Acyl transfer (nucleophilic substitution at carbonyl) reactions proceed in two stages via a "tetrahedral intermediate." Draw the tetrahedral intermediate as it is first formed in the following reaction. CI H₂N OH • You do not have to consider stereochemistry. • Include all valence lone pairs in your answer. • Do not include counter-ions, e.g., Na+, I, in your answer. • In cases where there is more than one answer, just draw one. Sn [FElectrophilic aromatic substitution usually occurs at the 1-position of naphthalene, also called the a position. Predict the major products of the reactions of naphthalene with isobutylene and HF#16c. Provide the missing reactants, reagents, or products for the following reaction sequences below.
- Explain why pentane-2,4-dione forms two alkylation products (A and B) when the number ofequivalents of base is increased from one to two.12) Use the curved arrow formalism to show the movement of electron pairs in the following reaction and label each reactant as a nucleophile or an electrophile. CHÍNH CHỊCH, + CO Học Nha CH₂CH₂CIElectrophilic aromatic substitution usually occurs at the 1-position of naphthalene, also called the a position. Predict the major products of the reactions of naphthalene with fuming sulfuric acid.
- Which of the following compounds is the least reactive in electrophilic aromatic substitution? A В || II D IV CI OCH3 CH3 II IVuo 9:0A Asiacell I. 02:48 المتبقي متعد د الخيارات Which alkyl halide would react the fastest under substitution conditions with HO-? 2-bromo-2-methylpentane O 2-bromo-3-methylpentane 1-bromo-2,2-dimethylpentane 2-bromopentane 1-bromo-4-methylpentane O 1 of 5Rank the reactivity of the compounds below toward nucleophilic acyl substitution by writing the compounds' letters in the proper blanks in the box below. `NH CI Br CH3 CH3 A В C E rank compounds for acyl substitution reactivity most least reactive reactive
- Indicate, by letter(s), the position(s) on the ring at which substitution occurs when the aromatic compounds shown undergo bromination with Br2, FeBr3 (when necessary). CN b a C `NO24. Aldehydes and ketones can be “protected" as acetals and ketals. Complete the following outlined reactions, showing how the protection is accomplished, and what results after deprotection. MgCI 1) 2) HO* deprotection hereGive the structure(s) of the organic product(s) formed, if any, in each of the following reactions. If no reaction occurs, write NR or no reaction. Circle major products when there are multiple. NH2 h. CH CH, (ехсess) NH 1) KOH 2) NH 3)H,N-NH,