Define a nucleophile as a species that donates both bonding electrons to form a bond with an electrophile, and recognise neutral and negatively charged nucleophiles such as OH-, CN-, NH3 and H2O by their lone pairs.
Tę umiejętność sprawdzają 3 zadania wzorowane na arkuszach IB z lat 2024–2025.
Chemia IBPaper 1A, maj 2025, TZ1wzorowane1 pktzamkniętełatwe (szac.)
What is the role of the hydroxide ion in the reaction of 2-bromopropane with warm aqueous sodium hydroxide? CH3CHBrCH3 + OH− → CH3CH(OH)CH3 + Br− A. Nucleophile and Lewis acid B. Electrophile and Lewis acid C. Nucleophile and Lewis base D. Electrophile…
Chemia IBPaper 2, maj 2024, TZ1wzorowane4 pktotwarteśrednie (szac.)
Butan-1-ol can be produced from 1-bromobutane. (i) Identify a nucleophile that would convert 1-bromobutane into butan-1-ol. (ii) Using curly arrows, sketch the mechanism for the reaction of 1-bromobutane with the nucleophile you identified in (i).
Chemia IBPaper 2, maj 2024, TZ2wzorowane4 pktotwarteśrednie (szac.)
1-Bromopropane reacts with aqueous sodium hydroxide to give propan-1-ol. (i) Identify the type of mechanism for this reaction. (ii) Explain the mechanism, using curly arrows to show the movement of electron pairs.