Method for separating and preparing alpha-terthienyl, thianthrene and p-terphenyl
A technology for p-terphenyl and terphenyl thiophene, which is applied in the field of separation and preparation of α-terphenyl thiophene, thianthracene and p-terphenyl, and can solve the problem of not being able to obtain extremely high-purity monomers
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Embodiment 1
[0011] Select n-hexane-acetonitrile on the semi-preparative countercurrent chromatograph GS10AB to separate and purify the Falconium chrysanthemum extract (the raw material of Falconium chrysanthemum extracted from petroleum ether). Let stand to layer. After equilibrating for a period of time, separate the upper phase and the lower phase, take the lower phase as the stationary phase, and the upper phase as the mobile phase. A semi-preparative high-speed countercurrent chromatograph is used, equipped with NS-1007 pump, 20mL injection valve, polytetrafluoroethylene column with a column volume of 240mL, 8823A-UV ultraviolet detector, and Yokogawa 3057 portable recorder. Weigh 200 mg of the raw material of chrysanthemum chrysanthemum extracted from petroleum ether and dissolve it in a mixed solution of 5 mL of the upper phase and 5 mL of the lower phase for use. Before sample injection, fill the entire column with stationary phase, adjust the speed of the main engine to 800rpm, a...
Embodiment 2
[0013] Select n-heptane-dichloromethane-acetonitrile on the semi-preparative countercurrent chromatograph GS10A to separate and purify the extract of Falconium chrysanthemum (the raw material of Falconium chrysanthemum extracted from petroleum ether). In a liquid funnel, shake well and let stand to separate layers. After equilibrating for a period of time, separate the upper phase and the lower phase, take the lower phase as the stationary phase, and the upper phase as the mobile phase. A semi-preparative high-speed countercurrent chromatograph is used, equipped with NS-1007 pump, 20mL injection valve, polytetrafluoroethylene column with a column volume of 230mL, 8823A-UV ultraviolet detector, and Yokogawa 3057 portable recorder. Weigh 129.4 mg of the raw material of chrysanthemum chrysanthemum extracted from petroleum ether and dissolve it in a mixed solution of 5 mL upper phase and 5 mL lower phase for use. Before sample injection, fill the entire column with stationary pha...
Embodiment 3
[0015] Select n-pentane-dichloromethane-acetonitrile on the semi-preparative countercurrent chromatograph EMC-500A to separate and purify the extract of chrysanthemum chrysanthemum (raw material of chrysanthemum chrysanthemum extracted from petroleum ether). In a separatory funnel, shake well and let stand to separate layers. After equilibrating for a period of time, separate the upper phase and the lower phase, take the lower phase as the stationary phase, and the upper phase as the mobile phase. A semi-preparative high-speed countercurrent chromatograph is used, equipped with NS-1007 pump, 20mL injection valve, polytetrafluoroethylene column with a column volume of 500mL, 8823A-UV ultraviolet detector, and Yokogawa 3057 portable recorder. Weigh 400.1 mg of the raw material of chrysanthemum chrysanthemum extracted from petroleum ether and dissolve it in a mixed solution of 5 mL upper phase and 5 mL lower phase for use. Before sample injection, fill the entire column with the...
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