Method for producing 3,7-dimethyl-7-octenol and method for producing 3,7-dimethyl-7-octenyl carboxylate compound

A method for producing 3,7-dimethyl-7-octenol of Formula (6):

• comprising steps of:
• subjecting a 3-methyl-3-butenyl nucleophilic reagent of General Formula (2):
• wherein M denotes Li, MgZ1, ZnZ1, Cu, CuZ1, or CuLiZ1, wherein Z1 denotes a halogen atom or a 3-methyl-3-butenyl group, and
• a 1,3-dihalo-2-methylpropane compound of General Formula (3):
• wherein X1 and X2 are the same as or different from each other, and each of X1 and X2 denotes a halogen atom,
• to a coupling reaction to obtain a 2,6-dimethyl-6-heptenyl halide compound of General Formula (4):
• wherein Y is X1 or X2 as defined above;
• converting the 2,6-dimethyl-6-heptenyl halide compound into a 2,6-dimethyl-6-heptenyl nucleophilic reagent of General Formula (5):
• wherein E denotes Li or MgZ2, wherein Z2 is a halogen atom;
• and
• subjecting the 2,6-dimethyl-6-heptenyl nucleophilic reagent to an addition reaction with at least one electrophilic reagent selected from the group consisting of formaldehyde, paraformaldehyde and 1,3,5-trioxane, followed by a hydrolysis reaction to obtain the 3,7-dimethyl-7-octenol of Formula (6).