3. Draw the resulting product(s) from the given reactions. Provide accurate stereochemistry and regiochemistry where applicable. In cases where multiple products are generated, specify the major and minor ones. (Each answer carries a value of 2 marks.) (a) CH₂CECH + H₂ (b) + H2 Ni Lindlar's catalyst CH-Br Zn + HCI (c) CH>MgBr (d) + H₂O heat (e) C7H16 (f) CH3 CH3CH2CH CCH₂CH3 HBr (B) -CH2CH3 H3O+ 2 HCI (h) H2C=CHCH2CH2CH2CH=CH2

1 Complete the following reaction scheme. Give all product(s) and indicate major or minor and any relevant stereochemistry.

Complete the following reactions, clearly indicating regio-and stereochemistry where applicable. In cases, where ortho-and para-products are formed, draw both.

2a) (2 ) Provide the reagents or products for the following reactions. Include ALL stereochemistry, where appropriate. i). ii) iii) Z-4-octene CHO 1) MCPBA/DCM 2) H₂O* NaOCH, CH,OH .CO.I heat ol NH₂ OH

Please show the major products with appropriate stereochemistry where needed.

1. Draw the structure of all reactants and product for the following reactions. (a) 2-methyl-1-iodocyclopentane + NaOCH3 ------>A (b) A + (1) Hg(OAc)2, H2O/(2) NaBH4 ------>

1) Complete the following reaction scheme. Show stereochemistry where necessary. Show all organic products. NBS UV 2) (a)Complete the following reaction scheme. Show stereochemistry where necessary b) Indicate the reaction type, SN1, SN2, E1 or E2 (c) Provide two reasons for the reaction type stated in (b) Reacton Pd Penon 2 Reacten Produd Feson2 Reaction Podet Reson 2 Peaction Product Reason 2 Tre OH Peacton Preduct aton Reason1 Reason2 HBr OH 3) For each of the following planar (flat) structures, indicate whether the structure is aromatic or non-aromatic он

1) Draw the complete electron-pushing arrow mechanism for the following reductions. Explain, using resonance contributors (structures), the regiochemistry that results in each case. OMe Na, MeOH ? NH3 CHO Na, MeOH ? NH3

Draw the product of the following reaction and include stereochemistry

4.  identify the structure of A and B in the following synthetic scheme: Write out complete reactions for each step, showing the structure of all reactants and products.       (a) cyclohexanol +Na2Cr2O7/H2SO4, H2O -------> A        (b)  A + Et2NH/H2SO4 ----->B