JEE Main levelSingle correct optionDifficulty 2 of 3hx083
Ethylmagnesium bromide is treated with DX2O. The organic product is
ACHX3CHX2OH
BCHX3CHX2D
CCHX3CHX2OD
DCHX3CDX3
Answer: B
The Grignard carbon acts as a base and takes one deuteron from DX2O: CHX3CHX2MgBr+DX2OCHX3CHX2D+Mg(OD)Br. Only the carbon that carried Mg gains deuterium, giving monodeuterated ethane.