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Q.29 tdentify the correct reagents required for the following transformation cho choh cooet cho (a) ) nabh: (i) h,0 (b) (i) liaih.; (ii) ho (c) ) hoch:choh, h i
Q.29 Tdentify the correct reagents required for the following transformation CHO CHOH COOEt CHO (A) ) NaBH: (i) H,0 (B) (i) LiAIH.; (ii) HO (C) ) HOCH:CHOH, H i) LiAIH4; (iii) H,0 (D) ) HSCH CH,SH, H: (i) LiAIH; (ii) H,O
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Priyanshu kumar Best Answer
option C
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Ethylene glycol is used as a protecting group for carbonyl groups in organic synthesis. Treating a ketone or aldehyde with ethylene glycol in the presence of an acid catalyst (e.g., p-toluenesulfonic acid; BF3·Et2O) gives the corresponding a 1,3-dioxolane, which is resistant to bases and other nucleophiles.
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Amol ashok pawar
Option C As diol will be protecting group for aldehyde As LiAlH4 will reduce ester to aldehydic group then h3o+ will deprotct and give alcohol out of aldehyde Protection deprotection