Provide the major organic product of the reaction shown below. 1. [(CH3)2CH],NLi 2. H₂C-CHCN 3. H₂O

QUESTION 2 The following is a proposed synthetic strategy that uses one starting alcohol in two separate single-step reactions (I and II) to make a pair of diene and dienophile which together undergo a Diels-Alder reaction to give a Diels-Alder product. The Diels-Alder product is subsequently converted to the final ether in a three-step synthesis (III, IV and V). Identify the reagent(s) from Table I required for each of those three sysnthese and place the number (A1, A2 reagent(s) in the given box right next to the corresponding step numbers (I to V) of the synthesis. DO NOT fill in any box with more than one number. (Note: This question is different from the previous synthesis question which allows two numbers for each box). You will be graded based on the number in each box. Do not fill in any single box with more than one number. Do not leave any box blank. B1, B2..., or C1, C2 ...) that represents the (I) diene OH (III, IV and V) Diesl-Alder product (II) dienophile Table I Number…

Major product?

Write the reagents

6. What is the major product of this reaction? CH3 5 BH3, ,then H₂O₂, OH

6. Complete the following reaction scheme (g) CH H3C. 1) 9-BBN CH 2) H-О, NaOH (h) H20, H,SO4. HØSO4 (i) 1) BH3 2) H2O,, NaOH

Give the major product(s) of the following reaction. HO, heat CH;0" CH;OH O., HO. There is no reaction under these conditions or the correct product is not listed here.

HgSO4 H2SO4, H20 1T (1) Br H2O2, NaOH 10 NaNH2 BH3, THE H =H 1S NH3 H20 HCI (1 equiv.) diethyl ether 1V 1W Br2 (m) MgBr (H,C=CH),CULI NaOCI ТСРВА > 1X 1Y > 1Z CH3COOH 1AA diethyl ether SoCI2, pyridine diethyl ether 1AB

What is product ? Please show mechanism each step

Draw the Major products of this reaction. Ignore the biproducts, methanol (H2CO) or CO2