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When C4H9-Mg-Cl reacts with formaldehyde and product is treated with acidified water pentyl alcohol (1-pentanol) is formed.
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What is the impurity formed during the preparation of the Grignard reagent if phenyl bromide was used instead of bromobenzene?
Uses of phenyl in domestic purpose
Why the reactions shown by grignard reagent are exothermic?
grignard reactions evolve heat
Why ethanol cannot be used as a solvent for grignard reagent?
Because it is a polar solvent and highly reactive towards Grignard's reagent forming the alkanes.
Provide methods for preparing the following compounds by the grignard method?
The Grignard reaction is when a solution of carbonyl is added to a Grignard reagent. Grignard reactions are slow or sluggish.
How can you make a tertiary alcohol from a grignard reagent?
you react the grignard with either an ester, an acid chloride or a ketone to get a tertiary alchohol. if you react a grignard reagent with an aldehyde you get a secondary alcohol and if you react the grignard with formaldehyde (methenal) you get a primary alchohol. same thing happens if u use R-Li instead of a grignard reagant.
Illustrate with equation the preparation of alkanes by wurtz synthesis?
wurtz synthesis: 2CH3Cl + 2Na = CH3-CH3 + 2NaCl Grignard Synthesis: - Preparation of Grignard reagent: CH3Cl + Mg = CH3MgCl - Hydrolysis of Grignard reagent: CH3MgCl + HCl = CH3-H + MgCl2
Why methyl-chloride and ethyl-chloride are not used for grignard reagent preparation?
It is not easy to break C-Cl bond as it is strong. Hence alkyl chlorides are not suitable for Grignard reagents.
What is the impurity formed during the preparation of the Grignard reagent if phenyl bromide was used instead of bromobenzene?
Uses of phenyl in domestic purpose
Why the reactions shown by grignard reagent are exothermic?
grignard reactions evolve heat
Why only ethers are used as a catalyst in grignard reagent reactions?
Ethers are used as solvent in Grignard reaction and not as catalyst. This is because if we use other solvents which have acidic hydrogen, Grignard reagent will decompose and the Grignard reaction will not proceed further.
Why ethanol cannot be used as a solvent for grignard reagent?
Because it is a polar solvent and highly reactive towards Grignard's reagent forming the alkanes.
Is grignard reagent Lewis acid?
Yes
Provide methods for preparing the following compounds by the grignard method?
The Grignard reaction is when a solution of carbonyl is added to a Grignard reagent. Grignard reactions are slow or sluggish.
How do you prepare organometallic compounds?
By using grignard reagent
Why grignard reagent always kept in dry ether?
During the formation of Grignard's reagent dry or anhydrous ether is used to prevent the magnesium from moisture because in presence of water magnesium leaves the organic material and combines with water.
Is magnesium the alkaline earth metal constitutes Grignard reagent?
yes it does CH3MGBR formulae of Grignard rea.
How can you make a tertiary alcohol from a grignard reagent?
you react the grignard with either an ester, an acid chloride or a ketone to get a tertiary alchohol. if you react a grignard reagent with an aldehyde you get a secondary alcohol and if you react the grignard with formaldehyde (methenal) you get a primary alchohol. same thing happens if u use R-Li instead of a grignard reagant.
