Reference of 6443-69-2, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 6443-69-2 name is 1,2,3-Trimethoxy-5-methylbenzene, This compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.
Reference Example 3 To a solution of 18-acetoxy-n-octadecanoyl chloride (11 g) in 1,2-dichloroethane (50 ml) is added aluminum chloride (7 g) and the mixture is stirred at room temperature for 2 hours. This reaction mixture is cooled to 5 C. and a solution of 3,4,5-trimethoxytoluene (6.2 g) in 1,2-dichloroethane (20 ml) is added. The mixture is stirred at room temperature for 72 hours. Then, this reaction mixture is heated to 50 C.-60 C. and stirred for 30 minutes. After cooling, ice-water is added to the reaction mixture and the product is extracted with dichloromethane. The dichloromethane layer is washed with water and the solvent is distilled off to recover an oil (12.1 g). This oil is dissolved in methanol (150 ml) followed by addition of sodium hydroxide (5.2 g). The mixture is stirred at room temperature for 2 hours, at the end of which time it is neutralized with 5N–HCl and the solvent is distilled off. The resultant crude crystals are rinsed with water and recrystallized from dichloromethane-ether (1:1). The above procedure yields 6-(18-hydroxy-1-oxooctadecyl)-2,3-dimethoxy-5-methylphenol (6.4 g) as colorless needles, m.p. 101 C. Elemental analysis for C27 H46 O5. Calcd. C, 71.96; H, 10.29. Found C, 72.08; H, 10.51.
At the same time, in my other blogs, there are other synthetic methods of this type of compound, 1,2,3-Trimethoxy-5-methylbenzene, and friends who are interested can also refer to it.
Reference:
Patent; Takeda Chemical Industries, Ltd.; US4495104; (1985); A;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem