| 摘要 |
PROBLEM TO BE SOLVED: To obtain a new biphenyl derivative which has specific oxetane rings and is useful for obtaining photocurable resins or thermosetting resins capable of being extremely quickly cured with light or heat to produce the cured products having high refractive indexes, excellent cured degrees, excellent heat resistance, excellent mechanical characteristics, and so on. SOLUTION: A compound of formula I (R1 to R4 are each H or methyl; R5, R6 are each H or a 1 to 6C alkyl), for example, 4,4'-bis(1-ethyl-3- oxetanylmethoxy)biphenyl of formula II. The compound of formula I is obtained by reacting biphenyl with a 3-alkyl-3-chloromethyloxetane or 3- chloromethyloxetance in the presence of an alkali metal hydroxide, an alkali metal hydride or an alkali metal preferably at 100 to 120 deg.C for 4 to 12 hr. The alkali metal hydroxide or the like is preferably used in an amount of 1. 6 to 2. 6 moles per mole of the biphenyl. The further employment of a phase transfer catalyst is preferable.
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