To obtain the subject compound showing high transparency in a short wavelength range of ArF excimer laser, etc. by reacting a specific compound with a carboxylic acid in a strong acid.
A compound of formula I or II ((l) is 1 or 2; (m) is 0 or 2; (n) is 0, 1 or 2; R1 to R3 are each H or CH3; R3 and R4 are each a hydrocarbon) is reacted with a carboxylic acid (e.g. acrylic acid, methacrylic acid, maleic acid or the like) in a strong acid (e.g. sulfuric acid, benzenesulfonic acid, p- toluenesulfonic acid or the like) to give the objective compound. The compound of formula I or II is a compound containing a carbon-carbon bond bridged at the 1,3-positions or 1,4-positions of a cyclohexane ring, a cyclobutane ring or a cyclooctane ring and further a carbon-carbon bond of double bond and at least one of carbons forming the carbon-carbon bond of double bond is required to directly bond three carbon atoms. For example, pinene, camphene, carene, cedrene, cubebene, etc.
KUMADA TERUHIKO
