Beginning with 4 -octyne as your only source of carbon, and using any inorganic reagents necessary, how would you synthesize the following compounds?
(a) $t$ is- 4 - Octene
(b) Butanal
(c) 4 -Bromooctane
(d) 4 -Octanol
(e) 4,5 -Dichlorooctane
(f) Butanoic acid