Structure of 408538-22-7
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CAS No. : | 408538-22-7 |
Formula : | C7H15NO |
M.W : | 129.20 |
SMILES Code : | CC(O)N1CCCCC1 |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium carbonate; In dichloromethane; acetone; | Preparation 2 4-(2-piperidinoethoxy) benzoic acid hydrochloride Into a 50 ml round bottom flask is placed 6.40 g (33.6 mmol) of p-toluenesulfonyl chloride and 25 ml of methylene chloride. The resulting solution is cooled with an ice bath as 4.00 g (31.0 mmol) of 1-piperidinoethanol in 6 ml of methylene chloride is added dropwise. After the addition is complete, the ice bath is removed and the resulting slurry is stirred for about 12 hours. The reaction mixture is concentrated on a rotary evaporator to yield a solid residue. The solid residue is transferred to a 100 ml round bottom flask with 45 ml of amyl acetate. Potassium carbonate (6.87 g, 49.7 mmol) and methyl 4-hydroxybenzoate (2.82 g, 18.5 mmol) are added to the slurry. The resulting mixture is heated to 145° C. for 2 hours. The reaction mixture is cooled to room temperature and washed twice with water. The organic layer is extracted with 11 ml of 8N hydrochloric acid. The aqueous layer is heated at gentle reflux for 3 hours. The resulting slurry is cooled to 50° C. and 11 ml of acetone is added. The slurry is cooled to 0°-5° C. and stirred for 1 hour. The product is filtered, washed with cold acetone, and dried at 50° C. in vacuo to yield 920 mg of product, (17percent). | |
With potassium carbonate; In dichloromethane; acetone; | Example 2 Preparation of 4-(2-piperidinoethoxy) benzoic acid hydrochloride Into a 50 ml round bottom flask is placed 6.40 g (33.6 mmol) of p-toluenesulfonyl chloride and 25 ml of methylene chloride. The resulting solution is cooled with an ice bath as 4.00 g (31.0 mmol) of 1-piperidinoethanol in 6 ml of methylene chloride is added dropwise. After the addition is complete, the ice bath is removed and the resulting slurry is stirred for about 12 hours. The reaction mixture is concentrated on a rotary evaporator to yield a solid residue. The solid residue is transferred to a 100 ml round bottom flask with 45 ml of amyl acetate. Potassium carbonate (6.87 g, 49.7 mmol) and methyl 4-hydroxybenzoate (2.82 g, 18.5 mmol) are added to the slurry. The resulting mixture is heated to 145°C for 2 hours. The reaction mixture is cooled to room temperature and washed twice with water. The organic layer is extracted with 11 ml of 8 N hydrochloric acid. The aqueous layer is heated at gentle reflux for 3 hours. The resulting slurry is cooled to 50°C and 11 ml of acetone is added. The slurry is cooled to 0-5°C and stirred for 1 hour. The product is filtered, washed with cold acetone, and dried at 50°C in vacuoto yield 920 mg of product, (17percent). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium carbonate; In dichloromethane; 1-pentyl acetate; acetone; | Preparation 3 4-(2-piperidinoethoxy) benzoic acid hydrochloride Into a 50 ml round bottom flask is placed 4.93 g (27.0 mmol) of 2,2,2-trifluoroethanesulfonyl chloride and 25 ml of methylene chloride. The resulting solution is cooled with an ice bath as 3.22 g (24.9 mmol) of 1-piperidinoethanol in 7 ml of methylene chloride is added dropwise. After the addition is complete, the ice bath is removed and the resulting slurry is stirred for about 12 hours. The reaction mixture is concentrated on a rotary evaporator to yield a waxy residue. The solid residue is slurried in 45 ml of amyl acetate and then potassium carbonate (5.50 g, 39.9 mmol) and methyl 4-hydroxybenzoate (2.26 g, 14.8 mmol) are added. The resulting mixture is heated to 140° C. for 2 hours. The reaction mixture is cooled to room temperature and washed twice with water and the organic layer is extracted with 10.5 ml of 8N hydrochloric acid. The aqueous layer is heated at gentle reflux for 4 hours. The resulting slurry is cooled to 50° C. and 11 ml of acetone is added. The slurry is cooled to 0°-5° C. and stirred for 1 hour. The product is filtered, washed with cold acetone, and dried at 50° C. in vacuo to yield 3.94 g of product, (90percent). | |
With potassium carbonate; In dichloromethane; 1-pentyl acetate; acetone; | Example 3 Preparation of 4-(2-piperidinoethoxy) benzoic acid hydrochloride Into a 50 ml round bottom flask is placed 4.93 g (27.0 mmol) of 2,2,2-trifluoroethanesulfonyl chloride and 25 ml of methylene chloride. The resulting solution is cooled with an ice bath as 3.22 g (24.9 mmol) of 1-piperidinoethanol in 7 ml of methylene chloride is added dropwise. After the addition is complete, the ice bath is removed and the resulting slurry is stirred for about 12 hours. The reaction mixture is concentrated on a rotary evaporator to yield a waxy residue. The solid residue is slurried in 45 ml of amyl acetate and then potassium carbonate (5.50 g, 39.9 mmol) and methyl 4-hydroxybenzoate (2.26 g, 14.8 mmol) are added. The resulting mixture is heated to 140°C for 2 hours. The reaction mixture is cooled to room temperature and washed twice with water and the organic layer is extracted with 10.5 ml of 8 N hydrochloric acid. The aqueous layer is heated at gentle reflux for 4 hours. The resulting slurry is cooled to 50°C and 11 ml of acetone is added. The slurry is cooled to 0-5°C and stirred for 1 hour. The product is filtered, washed with cold acetone, and dried at 50°C in vacuoto yield 3.94 g of product, (90percent). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With thionyl chloride; potassium carbonate; In dichloromethane; water; acetone; | Preparation 1 4-(2-piperidinoethoxy) benzoic acid hydrochloride Into a 500 ml round bottom flask is placed 23.38 g (197 mmol) of thionyl chloride and 140 ml of methylene chloride. The resulting solution is cooled with an ice bath as 21.91 g (170 mmol) of 1-piperidinoethanol in 30 ml of methylene chloride is added over 30 minutes. After the addition is complete, the ice bath is removed and the mixture is stirred for about 12 hours. The reaction mixture is concentrated on a rotary evaporator to yield a solid residue. Amyl acetate (225 ml), potassium carbonate (34.4 g, 249 mmol), and methyl 4-hydroxybenzoate (14.1 g, 92 mmol) are added to the residue. The resulting slurry is heated to 135° C. for 5 hours. The reaction mixture is cooled to room temperature and washed twice with 100 ml of water. The organic layer is extracted with 53 ml of 8N hydrochloric acid. The aqueous layer is heated at gentle reflux for 4 hours. The resulting slurry is cooled to 50° C. and 50 ml of acetone is added. The slurry is cooled to 0°-5° C. and stirred for 1 hour. The product is filtered, washed with cold acetone, and dried at 50° C. in vacuo to yield 17.9 g of product, (67percent). | |
With thionyl chloride; potassium carbonate; In dichloromethane; water; acetone; | Example 1 Preparation of 4-(2-piperidinoethoxy)benzoic acid hydrochloride Into a 500 ml round bottom flask is placed 23.38 g (197 mmol) of thionyl chloride and 140 ml of methylene chloride. The resulting solution is cooled with an ice bath as 21.91 g (170 mmol) of 1-piperidinoethanol in 30 ml of methylene chloride is added over 30 minutes. After the addition is complete, the ice bath is removed and the mixture is stirred for about 12 hours. The reaction mixture is concentrated on a rotary evaporator to yield a solid residue. Amyl acetate (225 ml), potassium carbonate (34.4 g, 249 mmol), and methyl 4-hydroxybenzoate (14.1 g, 92 mmol) are added to the residue. The resulting slurry is heated to 135°C for 5 hours. The reaction mixture is cooled to room temperature and washed twice with 100 ml of water. The organic layer is extracted with 53 ml of 8 N hydrochloric acid. The aqueous layer is heated at gentle reflux for 4 hours. The resulting slurry is cooled to 50°C and 50 ml of acetone is added. The slurry is cooled to 0-5°C and stirred for 1 hour. The product is filtered, washed with cold acetone, and dried at 50°C in vacuoto yield 17.9 g of product, (67percent). |
Tags: 408538-22-7 synthesis path| 408538-22-7 SDS| 408538-22-7 COA| 408538-22-7 purity| 408538-22-7 application| 408538-22-7 NMR| 408538-22-7 COA| 408538-22-7 structure
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