反应详情

Next, 1,000 g. of a mixture of cis- and trans-nerolidol in a ratio of 40:60 were rectified using a rectifying column having about 40 theoretical plates at 135° - 140° C. of the column bottom temperature at 0.3 - 0.5 mmHg of reduced pressure under reflux ratio of 10 to obtain 183 g. of cis-nerolidol (0.3 mmHg). This yield was 46 percent of distillation yield for cis-isomer charged. Its refractive index was nD30 = 1.4753 and its NMR spectrum in carbon tetrachloride is shown in FIG. 4. 324 g. of trans-nerolidol were obtained from the distillate having b.p. 107° - 110° C. (0.5 mmHg). This was 54 percent of distillation yield for trans-isomer charged. Its refractive index was nD30 = 1.4754 and its NMR spectrum is shown in FIG. 6. 477 g. of intermediate distillate in a ratio of 46:54 of cis- : trans-isomer were also obtained.

1. customat 135° - 140° C.
2. customto obtain 183 g
3. distillationThis yield was 46 percent of distillation
4. customyield for cis-isomer
5. additioncharged