Multiple choice

Which Grignard reagent is commercially available?

  1. Allylmagnesium bromide

  2. Dimethylmagnesium

  3. Ethylmagnesium bromide

  4. Methylmagnesium chloride
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Methylmagnesium chloride is a commercially available Grignard reagent. Like methyllithium, it is the synthetic equivalent to the methyl carbanion synthon. It is usually sold as a solution in tetrahydrofuran. Two molecules of tetrahydrofuran (in the upper part of the drawing) coordinate by their oxygen atoms to magnesium.

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