Using acetylene as the starting material, show the synthesis of 6,6-dimethyl-1-heptyn-3-ol.

Reaction scheme showing synthesis of 6,6-dimethyl-1-heptyn-3-ol from acetylene.

Reaction scheme with benzyl amine in the synthesis of 6,6-dimethyl-1-heptyn-3-ol.

Reaction scheme showing synthesis of 6,6-dimethyl-1-heptyn-3-ol with benzyl amine as a reactant.

Reaction scheme illustrating synthesis of 6,6-dimethyl-1-heptyn-3-ol with benzyl amine and NaNH2.