1-propanamine to cyclopropane?
Diazotisation of primary amines gives the diazonium salt which decomposes to the primary cation and $\ce{N2}$. From this, in aq. $\ce{HCl}$, you directly get the primary alcohol, primary chloride and primary nitro by immediate trapping of the primary cation by ions in solution and the terminal alkene by 1,2 elimination. 
A cation shift to give the secondary cation also occurs to give secondary alcohol and secondary chloride. 
The cyclopropane arises from a 1,3-elimination of the primary cation. 








pics from reference 1 

References


Amines with Nitrous Acid - chem.libretexts.org
Nitrosation, diazotisation, and deamination by J. H. Ridd  Q. Rev. Chem. Soc., 1961, 15, 418-441 DOI: https://doi.org/10.1039/QR9611500418