Question 9 Select the major product of the following reaction sequence. a) structure A structure B structure C O structure D CN OH 1) PBг3 2) NaCN, DMSO 3) H3O+ 4) SOC 2 5) NH3 excess NH₂ HO NH₂ NH2 b) d) c) OH

24. Which product is formed by the reaction ? A) | B) || C) ||| D) IV Br ОН NaH Br ... هستم IV

The following reaction can be carried out in two steps. Choose the correct reagents i) and ii) to perform the following reaction. CN i) 11) or Oi) CN; ii) heat Oi) CN ; ii) H₂O, acid catalyst O i) Br₂; ii) CN- O i) H₂O, acid catalyst; ii) CN O i) HBr; ii) CN

QUESTION 19 Which reagent/set of reagents would be used to carry out the following reaction to get the major product as showt OA. 1) Os04 2) NaHSO3 ОВ. 1) ВНз 2) H202, NaOH OC. 1) Hg(OAc)2. H20 2) NABH4, NaOH O D. RCO3H O E. H2SO4(aq) QUESTION 20 What is the expected major product of the following reaction? 1) CH,CH;CH;CH;Li 2) H"(aq) OH A OH OH D B.

The following reaction can be carried out in two steps. Choose the correct reagents i) and ii) to perform the following reaction. CN 1) Oi) HBr; ii) CN- O i) CN¯; ii) heat O i) Br₂; ii) CN¯ i) H₂O, acid catalyst; ii) CN- Oi) CN ; ii) H₂O, acid catalyst

Complete the reactions given below

5. What is the major product of the following reaction? OH A) I B) || C) III D) all of the above E) none of the above H₂SO4 heat ||| LOSO3H

3) Draw the structures of the major organic product(s) for the following reactions. HI in CH₂Cl₂ 3 excess Cl₂ in H₂O H₂SO4 in H₂O (Two products) Br-Cl in THF 1) BH3 2) alkaline H₂O₂ OSO4 + HOOH

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Qurston 18 Consuder the reatons shown. CI (8) t HCI cl + H2 What type of resction in it? Which is the corred product A,B or C? Name the first reactant the second reactont Name the