How will you prepare i) 2-Methylbutan-1-ol from an alkene ?
ii) 1-phenylethanol from acetaldehyde ? iii) Cyclohexylmethanol from a Grignard reagent ?
Answers
Explanation:
Complete step by step answer: (i)Here, we have to obtain 2-methylbutan-1-ol from analkene.Walkenee know that alcohol can be obtained from by hydroboration oxidation reaction. In this reaction, diborane(BH3)2 undergoes reaction with alkene to produce trialkyl boranes as addition product.
2
The steps used for conversion of acetaldehyde to 1-phenylethanol are: Step 1 : Raction of acetaldehyde with Grignard reagent. In Grignard reagent, the alkyl group behaves as a nucleophile and gets added to electrophilic carbon of aldehyde to give an addition product. Step 2 : Hydrolysis of addition product
3Cyclohexylmethanol acn be prepared from grignard reagent by a reaction between fo r m al deyde and grignard reagent and cyclohexyl halide. Explanation: Sauce with grignard reagent is made to react with formaldehyde. Then derivative of the reaction between the two reagent is made to react with cyclohexyl halide.
