Question

15 Identify the reaction CH2OH sequence for the following transformation. 0 CH3 (A) CH3C! KMnO4, H* CH3COCI LiAlH4 AlCl3 AICI: Br2 CH3COC HOCH2CH2OH Mg FeBrz AlCl3 H307 ether CH20 H30+ ( B) 8 CH3COCI (C) Br2 Mg FeBr3 ether H30* AICI: (D) Mg CH3COCI Br2 AlCl3 FeBrzether CH20 H30*

Answer 1

The correct reaction sequence for the following conversion CHOH -CH₂ - The target correct reaction sequence to obtain the target molecule B is (-1,+R) Br Para director Br & Boz CHCOCI FeBrz Benzene electroph shilic bromincetion Bromo benzine AIC, Friedal coryt acyication но (ц, ч, ои Mgbr + Mg ether CHO (13 Cu-ong Br guignorel reagerd (4₂04 How (uz deprotation -CH₂ cyf ketone Target (product)

at Here, at first electrophilic bromination benzene of gives bromo benzene where -Bro is para diredor & it gives acgration pora position. In the next step, protection af ketone caith ethylene glycol followed by treatment with ng giver goignard reagent. Finally, the roaction of goignard reagent with formaldehyde gives cohich is with Hot gives final target molecule so correct reaction sequence an intermediate Hydrolys's / depołection with is