Methods of producing 7-methyl-3-methylene-7-octenal acetal compounds

A method for producing a 7-methyl-3-methylene-7-octenyl carboxylate compound of General Formula (4):

• wherein R3 is a hydrogen atom or a monovalent hydrocarbon group having 1 to 6 carbon atoms,
• the method comprising steps of:
• hydrolyzing a 7-methyl-3-methylene-7-octenal acetal compound of General Formula (1):
• wherein R1 and R2, which may be the same or different, are each an alkyl group having 1 to 6 carbon atoms, or are bonded to each other to form a divalent alkylene group having 2 to 12 carbon atoms, in the presence of water under an acidic condition to obtain 7-methyl-3-methylene-7-octenal of Formula (2):
• reducing the 7-methyl-3-methylene-7-octenal (2) with a reducing agent selected from the group consisting of hydrogen, boron compounds, dialkylsilanes, trialkylsilanes, allkylaluminums, dialkylaluminums, metal hydrides, and complex hydrides and alkoxy or alky derivatives thereof, to obtain 7-methyl-3-methylene-7-octenol of Formula (3):
• and
• esterifying the 7-methyl-3-methylene-7-octenol (3) through a reaction with an acylating agent, a reaction with a carboxylic acid, a transesterification, or a method in which the 7-methyl-3-methylene-7-octenol (3) is converted into an alkylating agent and then the alkylating agent is reacted with a carboxylic acid, to obtain the 7-methyl-3-methylene-7-octenyl carboxylate compound (4).