以下为句子列表：
英文: Ethyl vanillin was synthesized by the phase-transfer catalysis CTEAB and O-ethoxyphenol, which was prepared from pyroeatehol with an overall yield of 55.2%, and the factors in the reaction, such as phase-transfer catalysis and temperature, were discussed.
中文: 摘要以邻苯二酚为原料，首先合成中间体邻乙氧基苯酚，然后以十六烷基三乙基溴化铵为相转移催化剂合成了乙基香兰素，考察了相转移催化剂的选择及反应温度，最后收率为55.2%。
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