2. Isomerization of alkenes can be achieved through conjugate addition of nucleophiles. Examine the reaction below and answer the questions that follow: ii) iii) iv) tolgoy Starting Alkene Alkene Product Give the chemical structure of the Alkene Product that is formed (NB: Show and label the geometry of the Alkene Product). Explain why geometry given in i) above is preferred. What is likely to be the geometry of the Starting Alkene? Give the full mechanism through which the isomerization is likely to occur.

f) Alkene X can be decomposed with hydrogen peroxide catalyzed by sodium tungstate to substance Q. This can be further degraded by iodoform reaction to substance R. Give the structures of substances Q and R. Xx S Na₂WO4 H₂O2 Q (C9H1603) 1: NaOH, 1₂ 2: H+ P₂O5 teplo - CHI3 R (C8H1404) P₂O5 teplo T g) The preparation of substance Q from substance X using hydrogen peroxide is a redox reaction. Identify the reductant and oxidant in this reaction, write the formal oxidation number to the atoms where it changes during the reaction and calculate the reaction. h) Substances Q and R undergo a reaction with phosphorous oxide under heating to form various products T and S. Determine the structure of substances T and S if you know their H NMR : 1H NMR (S): 2.2 (t, 2H); 1.8 (t, 2H); 1.3 (s, 6H). 1H NMR (T): 4.6 (d, 1H); 4.3 (d, 1H); 2.2 (t, 2H); 1.5 (t, 2H); 1.3 (s, 6H).

VII. 1-bromo-3-methyl-2-butene undergoes nucleophilic substitution reaction in both ethanol and sodium ethoxide/DMSO mixture. (1) Please write all organic substitution products for each of the two reactions, if two products are formed in a reaction, assign the major product, assuming that the reaction is under kinetic control (2) What is the most likely mechanism for each reaction? (giving the name of mechanism is sufficient).

With explanation.....

help;  please DRAW IT; don't answer in text. thanks   the reactions are all covered in Organic Chemistry, 6th Edition by Marc Loudon and Jim Parise. Chapter 15-17

The nitro groups on the benzene ring in the reactant serve two purposes.One is to let you know what atoms in the reactant correspond to what atomsin the product. But what role do the nitro groups play electronically – whywould the reaction be much slower if these nitro groups weren’t attached tothose benzene carbons? Draw any relevant structures to support youranswer.

Give a clear explanation handwritten in detailed of both subparts please

Which of the following best describes a key step in the mechanism for the reaction below? HO, ... -CH3 -CH3 + en dihydroxylation H3C- H3C- OH (A) free-radical substitution at the carbonyl carbon B elimination reaction by abstraction of a beta-hydrogen nucleophilic attack by an alkene to form a cyclic (epoxide) intermediate electrophilic addition reaction to form a carbocation intermediate