Question

4. Give the reagents according with the reaction chart. Y B G L' HG HC-CECH lyne CH нс. CH keton Hai che JH HC ECNO Grand coupling reactions Par catalyst T Y Y 00 D formats of NEW Ched

Answer 1

Answer : Reactions and missing reagent from A to H is given in the image attached

A = H2O ( attack of grignard Reagent to H2O to form alkane )

B = Br2 / ROH , they will form ROBr and add according to markovnikov rule to alkene . Br+ is electrophlile and RO- is nucleophile.

C = PCC / CH2Cl2 , used for oxidation of secondary alcohol to ketone .

D = KMnO4/ H+ , oxidizing agent used to oxidize alcohol to Carboxylic acid.

E = H2O / H+ , acidic Hydrolysis of nitrile will give Carboxylic acid.

F = NaNu , where Nu is nucleophile it can be - OCOR , -SH , -N3 , -OR .

G = H2O / H+ / Hg2+ , oxymercuration Reaction of alkyne to form ketone .

H = H2CrO4 , oxidizing agent used to oxidize aldehyde to Carboxylic acid.

Answer → HO 3 A HO H max Grignard Reagent B, ROH Hz C-1= CH₂ Alkene - Her sambo histoform H₂-CH-CH₂ pee (422 OH NaBHy -ber OR B- Br, ROH. 3 Hz C- PCC (CH₂ h oxidation KMna, Ht OH ..oh LiAl My H₂O D=km nou,ht oxidation Но, н+ Y CEN cooh E- Hot Hydrolysis of nitrile (6 Helgacha Natno Y F = Nanu I NW = nucleaphite Nu It can be - OCOR, -SH -NE, -OR 1.2 H, H+, H₂C-CH=CHg Hgat H₂ - 9-CH3 oxymeruoration of alkyne 6 = H₂ Ht, tight H M₂ GO, HECH OH H. H. GO4 C