TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The 5Hex-5-yn-1-ol is prepared by calculating 1 equivalent of Hex-2-yn-1-ol, adding 5-6 equivalents of lithium metal and dried 1,3-propylene amine into the reaction bottle under the protection of argon, where the density of lithium is 1.5-2.5 M, stirring the solution at 15-35 degrees C for 30-45 minutes, dissolving the metal lithium, reacting to the deep blue color, heating the blue solution to 60-80 degrees C, stirring to fade the deep blue color for 3-4 hours, cooling the reaction solution to 15-35 degrees C, adding, in batch with argon protection, 3.5-4.5 equivalents of tertiary butyl alcohol potassium powder into the solution, changing the solution to light yellow, continuously stirring the solution after adding for 30-45 minutes, dropping slowly 1 equivalent of 2-acetylene-1-alcohol, changing gradually the solution in red brown, continuously reacting for 1-2 hours after finishing dropping, pouring the reaction solution into ice water, extruding with petroleum ether, combining the organic phase, washing with 5-10% of hydrochloric acid solution and saturated salt water, and drying with anhydrous sodium sulfate, filtering, concentrating and purifying the coarse product by column chromatography. The 1-THP-5-acetylene-1-alcohol is prepared by calculating 1 equivalent of Hex-5-yn-1-ol, making 5-acetylene-1-alcohol soluble in dried methylene chloride with the density of 0.1-0.3 M, adding 0.05-0.1 equivalents of camphorsulfonic acid, fully cooling to 0-5 degrees C, dropping 1.5-2 equivalents of methylene chloride solution of 3,4-dihydropyran with the density of 2-3 M, then slowly raising to the room temperature, after fully reacting and quenching reacting with saturated sodium bicarbonate solution, removing the methylene chloride by reducing pressure distillation, making the residue soluble in petroleum ether, washing with saturated sodium bicarbonate solution and saturated salt water, drying with anhydrous sodium sulfate, and filtering, concentrating and purifying the coarse product by column chromatography. The (7E)-1-THP-8-chloride-5-acetylene-7-olefinic-1-octanol is prepared by calculating 1 equivalent of 1-THP-5- acetylene-1-octanol under argon protection, making 1-THP-5-acetylene-1-alcohol and 2-3 equivalents of trans dichloroethylene soluble in the dried tetrahydrofuran with the density of 0.1-0.3 M, adding 0.04-0.06 equivalents of bis(triphenylphosphine)palladium(II) dichloride and 0.15-0.25 equivalents of cuprous iodide, finally dropping 1.5-2.5 equivalents of diisopropyl amine, reacting at the room temperature for 24-48 hours, washing with saturated sodium bicarbonate solution and saturated salt water, drying with anhydrous sodium sulfate, and filtering, concentrating and purifying the coarse product by column chromatography. The (7E)-1-THP-5-acetylene-7-olefinic-1-lauryl alcohol is prepared by calculating 1 equivalent of (7E)-1-THP-8-chloride-5-acetylene-7-olefinic-1-octanol, under argon protection, making the compound (7E)-1-THP-8-chloride-5-acetylene-7-olefinic-1-octanol soluble in the dried tetrahydrofuran with the density of 0.1-0.3 M, adding 0.01-0.02 equivalents of tris(acetylacetonato) iron(III) and 6-10 equivalents of N-methyl pyrrolidone, cooling the reaction solution to -10 degrees C to 0 degrees C, finally slowly dropping 1.5-2.5 equivalents of the obtained bromination normal butane format reagent, raising the reaction solution to the room temperature, continuing reacting over night, adding saturated ammonium chloride solution for quenching reacting, extruding with ether for 2-4 hours, combining the ether solution, washing the ether solution with saturated sodium bicarbonate solution and saturated salt water, drying washed ether solution with anhydrous sodium sulfate, and filtering, concentrating and purifying the coarse product by column chromatography. The (5Z,7E)-Dodeca-5,7-dien-1-ol is prepared by repairing active zinc powder under argon protection, adding zinc powder in distilled water, where the density of zinc powder is 0.9-1.1 M, reacting the solution for 30-45 minutes, then adding 8-15% of copper acetate to zinc powder mass fraction and then stirring for 30-45 minutes, adding 8-15% of silver nitrate to zinc powder mass fraction and then reacting for 1-1.5 hours, filtering, washing the paint in turn with distilled water, acetone, ether and methanol, obtaining after drying, calculating 1 equivalent of (7E)-1-THP-5-acetylene-7-olefinic-1-lauryl alcohol, adding (7E)-1-THP-5-acetylene-7-olefinic-1-lauryl alcohol into the mixed solution of methanol and distilled water with the density of 0.1-0.2 M, adding 3-5 equivalents of active zinc powder, heating the reaction solution to 40-50 degrees C, stirring the raw material disappears, reducing pressure to remove methanol, adding ether for extruding for 2-4 times, combining organic phase, washing with saturated salt water, drying with anhydrous sodium sulfate, and filtering, concentrating and purifying the coarse product by column chromatography. The (5Z, 7E)-12C diene alcohol is prepared by calculating 1 equivalent of (5Z,7E)-Dodeca-5,7-dien-1-ol, making (5Z,7E)-Dodeca-5,7-dien-1-ol soluble in methanol with the density of 0.1-0.3 M, adding 0.05-0.1 equivalents of camphorsulfonic acid, reacting fully while stirring at 15-35 degrees C, quenching reacting with saturated sodium bicarbonate solution, reducing pressure to remove methanol, making the residue in ethyl acetate, washing the residue with saturated sodium bicarbonate solution saturated salt water, drying with anhydrous sodium sulfate, and filtering, concentrating and purifying the coarse product by column chromatography. The (5Z,7E)-12C diene acetate is prepared by calculating 1 equivalent of (5Z,7E)-12C diene alcohol at 15-35 degrees C, making (5Z,7E)-12C diene alcohol soluble in dried pyridine with the density of 0.1-0.3 M, dropping 1.5-2.5 equivalents of acetic anhydride, fully reacting, quenching reacting with saturated sodium bicarbonate solution, after ether extraction, combining organic phase, washing with distilled water, 5-10 wt.% of hydrochloric acid solution and saturated salt water, drying with anhydrous sodium sulfate, filtering, concentrating and purifying the coarse product by column chromatography. The (5Z,7E)-12C diene propionate is prepared by calculating 1 equivalent of (5Z,7E)-12C diene alcohol at 15-35 degrees C, making (5Z,7E)-12C diene alcohol soluble in dried pyridine with the density of 0.1-0.3 M, dropping 1.5-2.5 equivalents of propionic acid anhydride, fully reacting, quenching reacting with saturated sodium bicarbonate solution, after ether extraction, combining organic phase, washing with distilled water, 5-10 wt.% of hydrochloric acid solution and saturated salt water, drying with anhydrous sodium sulfate, and filtering, concentrating and purifying the coarse product by column chromatography. The (5Z,7E)-12C diene aldehyde comprises calculating 1 equivalent of (5Z,7E)-12C diene alcohol at 15-35 degrees C, making (5Z,7E)-12C diene alcohol soluble in dried pyridine with the density of 0.1-0.3 M, dropping 1.5-2.5 equivalents of chloride chromic acid pyridine salt hum propionyl-CoA carboxylase, stirring at the room temperature and fully reacting, reducing pressure of the filtrate and concentrating, adding ether into the concentrated solution, washing with saturated sodium bicarbonate solution, saturated ammonium chloride solution and saturated salt water, drying with anhydrous sodium sulfate, and filtering, concentrating and purifying the coarse product by column chromatography.