# Which option represents the product of reaction between "butyl magnesium chloride" and water? "A. BuMgCl + water"rarr"BuOH" "B. BuMgCl + water"rarr"BuOBu" "C. BuMgCl + water"rarrH_3C-CH_2CH_2CH_3 + MgOHCl "D. BuMgCl+water"rarr"butanol"

May 15, 2016

$\text{Option C, n-butane}$

#### Explanation:

Grignard reagents feature a highly nucleophilic carbon centre, almost a carbanion, ${H}_{3} C - {H}_{2} C - {H}_{2} C - {H}_{2} {C}^{\delta -} {\left\{M g I\right\}}^{\delta +}$.

This will react with almost any electrophile, including the proton of water.

Thus: $R - M g X + {H}_{2} O \rightarrow R - H + M g X O H$

If you wanted to label an alkane with deuterium, this would be a good way to go about it, by using deuterium oxide, ${D}_{2} O$, where D=""^2H.

$R - M g X + {D}_{2} O \rightarrow R - D + M g X O D$.

So here you have the ${d}_{1} - \text{alkane}$ easily, and it's much cheaper than buying it.