preparation of haloalkanes and haloarenes
haloalkanes
by halide exchange
swartz reaction
finkelstein reaction
from alkenes
direct halogeation
from alcohols
treating alcohol with PCL3 or PCL5
treating with thionyl chloride
treating with halogen acid
haloarenes
diazonium salt
by CuCl
by CuBr
by Cu/HCl
by NaBH4
by Kl