| 摘要 |
A process for producing a conjugated diene represented by the general formula <IMAGE> wherein R3, R4 and R5 each represent a hydrogen atom, or any one of them represents a methyl group and the other two each represent a hydrogen atom, which comprises heating an alkane-1,3-diol represented by the general formula <IMAGE> wherein R1 and R2 each represent a hydrogen atom, or one of them represents a hydrogen atom and the other represents a methyl group, to a temperature of at least 130 DEG C. in the liquid phase in the presence of water and a boron-oxyacid or an oxygen-containing boron compound capable of forming a boron-oxyacid it under the reaction conditions.
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