Intermediate for synthesizing butene liquid crystal and synthetic method thereof
An intermediate and liquid crystal technology, applied in the preparation of sulfonate esters, organic chemistry, etc., can solve the problems of difficulty in choosing a good solvent to dissolve, the sulfonate ester is not easy to dissolve, and the raw material alcohol is difficult to convert, and the post-processing process is simple, fast and good. Decolorization, simple post-processing effects
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Embodiment 1
[0031] [Example 1] preparation of
[0032] Will 8g (0.026mol), 5.3g (0.052mol) of triethylamine, and 60ml of THF were put into the bottle, and 5.9g (0.077mol) of methanesulfonyl chloride was added dropwise at 20°C, and the addition was completed in about 3 minutes. Reflux at 20°C for 10h. Then, evaporate 70% THF, add 50ml of water and stir for 1 hour, filter, and wash the filter cake once with 40ml of 50% ethanol. The product sulfonate was obtained, mp143°C, HPLC>97%, yield>97%.
Embodiment 2
[0033] [Example 2] preparation of
[0034] The specific operation is the same as in Example 1, the product mp>130°C, HPLC>97%, and yield>97%.
Embodiment 3
[0035] [Example 3] preparation of
[0036] The specific operation is the same as in Example 1, the product mp>150°C, HPLC>97%, and yield>97%.
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