The bromide shown is heated with $KNO X_{2}$ in ethanol. Following the textbook convention (ionic nitrite reacts through oxygen), which structure is the main product?

AStructure A
BStructure B
CStructure C
DStructure D

Answer: A

In ionic KNO2 the negative charge sits on oxygen, which attacks the carbon, giving the alkyl nitrite: butan-2-yl nitrite. The nitroalkane is the AgNO2 product (N-attack), butan-2-ol would require hydrolysis, and but-2-ene is an elimination product.

Practice Haloalkanes and Haloarenes More on KCN vs AgCN, KNO2 vs AgNO2, Finkelstein and Swarts on drawn halides

Previous questionNext question

The bromide shown is heated with KNOX2​ in ethanol. Following the textbook convention (ionic nitrite reacts through oxygen), which structure is the main product?

Answer: A

More questions on KCN vs AgCN, KNO2 vs AgNO2, Finkelstein and Swarts on drawn halides

The bromide shown is heated with $KNO X_{2}$ in ethanol. Following the textbook convention (ionic nitrite reacts through oxygen), which structure is the main product?