Question 3 a) Complete the following reactions by filling in the missing reactants, products or reagents (N, O, P, Q and R). OH (i) CH,-CH-CH, CH,-C-CHa CH;CH,MgBr H* H,0/H* HCN (ii) H-C-CH3 Q Heat NABH, (iii) CH3 -CH,-CH3 R H*

Question 6 Give the major organic product for the following reaction. HgS0, CH3(CH,);C=CH O Cyclohexane 2-Hexanone O Cyclopentanol O Hexanal O Hexanol

The products of the following reaction are: CH;CH, C-0-CH,CH; + NAOH CH;CH,C-O Na* + CH;CH,OH CH;CH,C-OH + CH,CH,OH CH;CH, C-OH + CH;CH,O Na* CH,CH, C-O' Na* + CH,CH,0 Na*

Organic Chemistry

Write the produocts of these reactions CH-0-C-(CH,CH CH(CH,>CH, CH-O-C-(CHh 3 H0 CHy-O-

-COH (acid) &H (aldehyde) Ar-H (aromatic) (C=C-H, vinylic OH (alcohol or phenol) X-C-H (X= halogen or oxygen) Ar-C-H (benzylic) CH 10.0 (C-C-C-H, allylic H on saturated C, base position 9.0 8.0 44 7.0 4.3 30 20 10 0 6.0 In this ¹H NMR spectrum the blue floating peaks are enlargements of the peaks to their right. 4.2 ppm Hz 5.0 1 4.0 10-13 9-10 3.0 6-8.5 4.6-5.7) 1-5 3-4.5 2-2.7 2-2.7 1.6-1.9) .8-1.6 l 1.75 1.70 1.65 2.0 1.0 0.0 Which compound is most likely to have given rise to this spectrum?

20.  Identify the product for each step in the following reaction sequence.  Write complete equations showing the structure of all reactants and products for each step. (a) Isopropyl benzene + NBS/heat ---------->A   (b) A+ t-BuOK --------->    B   (c) B + 1)BH3 followed by 2)H2O2/NaOH -----> C   (d)  C + PCC ------> D

Complete the next reaction

10

What is the main product of the following reaction? Please show all the steps of the mechanism