(a) The cis isomer of 3-hexen-1-ol (CH3CH2CH=CHCH2CH2OH) has the characteristic odor of green leaves and grass. Suggest a synthesis for this compound from acetylene and any necessary organic or inorganic reagents.
(b) One of the compounds responsible for the characteristic odor of ripe tomatoes is the cis isomer of CH3CH2CH=CHCH2CH=O. How could you prepare this compound?