One of the products formed in the following reaction is

Cyclohexylmagnesium bromide is a Grignard reagent, which acts as a strong base.

Cyclohexylamine contains active (acidic) hydrogen atoms attached to the nitrogen atom.

When a Grignard reagent reacts with a compound containing an active hydrogen, an acid-base reaction occurs preferentially. The Grignard reagent abstracts a proton to form the corresponding alkane.

$C_6H_{11}MgBr + C_6H_{11}NH_2 \rightarrow C_6H_{12} + C_6H_{11}NHMgBr$

Thus, cyclohexane ($C_6H_{12}$) is formed as one of the products.