α-terpineol from hydration of crude sulfate turpentine oil
α-terpineol from hydration of crude sulfate turpentine oil
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DOI：
10.1021/jf010341b
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发表时间：
2001-09-01
影响因子：
6.1
通讯作者：
Roy, C
中科院分区：
文献类型：
--
作者：
Pakdel, H;Sarron, S;Roy, C
对不同条件下α-蒎烯的水合反应进行了研究，并与文献进行了比较。确定了在无催化剂、低丙酮用量的条件下，α-蒎烯与粗松节油水合反应的最佳反应条件。报道了详细的反应产物分析。主要水化产物α-松油醇与15%硫酸和过量丙酮在80-85℃的油浴中反应4h，产率为67wt%，水化时间超过4h，α-松油醇逐步转化为4-(2-羟丙基)-1-甲基环己醇(1，8-松油醇)。α-松油醇得率为粗松节油中初始α-松油烯的77wt%。对水化前后的粗松节油进行了化学分析，并对产物分布进行了讨论。
Hydration of alpha -pinene under various conditions was studied and compared with the literature. Optimal reaction conditions have been established for the hydration of alpha -pinene and crude turpentine oil in the absence of catalyst and using a low volume of acetone. A detailed reaction product analysis is reported. The main hydration product, alpha -terpineol, was obtained at a yield of 67 wt % of the initial alpha -pinene by reacting with 15% aqueous sulfuric acid and an excess of acetone in an oil bath heated to 80-85 degreesC over the course of 4 h. A progressive transformation of alpha -terpineol to 4-(2-hydroxypropyl)-1-methylcyclohexanol (1,8-terpine) takes place as the hydration time exceeds 4 h. A crude turpentine oil sample was also hydrated under conditions similar to those of alpha -pinene. The alpha -terpineol yield was 77 wt % of the initial alpha -pinene in the crude turpentine oil. The chemical analysis of the crude turpentine oil before and after hydration was carried out, and the distribution of the products was discussed.