Question

6 QUESTION 6 (1 point) Which of the following solvent(s) can be used for the Grignard reaction? methanol, ethanol, water, diethyl ether, THF all of them in the list methanol and ethanol diethyl ether and THF water Click Save and Submit to save and submit. Click Save All Answers to save all answers F3

Answer 1

Qno 6:- Diethyl ether and THF are the solvents that can be used as grignard reagents. This is because Most Grignard reactions are conducted in ethereal solvents, especially diethyl ether and THF. With the chelating diether dioxane, some Grignard reagents undergo a redistribution reaction to give di-organomagnesium compounds.
Hence option (c) is correct.

Q no 2:-Diethyl ether is an especially good solvent for the formation of Grignard reagents especially Diethyl ether are good solvents and are non-acidic (aprotic). Water or alcohols would protonate them and thus can destroy the Grignard reagent, because the Grignard carbon is highly nucleophilic. This is why grignard reaction must be carried out in dry condition. Because water can destabilise the intermediate.
Hence option (c) is correct.

Qno 4:-The Grignard reagent functions as a nucleophile, attacking the electrophilic carbon atom that is present within the polar bond of a carbonyl group
Hence option (e) is correct.