Carry synthesis of the following compounds using 4-octyne as the only source of carbon. Provide a full retrosynthetic analysis as well as the complete forward synthesis including all reagents necessary to carry out each step.
a. 4-bromooctene
b. 4-bromooctane
c. Butanal
d. Butanoic Acid
e. 4-Octanol
f. 4,5-diclorooctane