## Answers

Answer osi(CH3)3 OH 4 Br Bor A Z (CH₂)₂sic (CA),N? protection of alcohol rakes Place osilk) li mg /ether osikth) 3. .Ong Br Ang Br Imo Nucleophitic addition to the carbonyl Centre, Osi(CH3)3 OH TBAF de protonation of alcohol. oranss. OH OH used for ((th) sice is A protection of alcohol.

If we protected alcohol the grignard reagent will react with alcohol produce akane. CScanned with CamScanner

OH Bro 5 PBrz Mechanism O piora Paper A Bor - OH act as a hucheophik o BY SNg reaction takes place Bro inversion of cm figuration) ÖH 60th cthy Hon Hae CHB the CH ch, oxygen is protmated. water is good leaving group. CH3 CH3 the Hoe И cthy Br aetas (ан, it is migrated Carbocation formd. a nucleophice 1 Br due to more stable attack to the Cambocation Centre He сть -Bor cm CScanned with CamScanner

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