反応 #8954

反応方程式

L-lysine methyl ester dihydrochloride

sodium hydroxide

→

L-lysine

溶媒

methanol

反応条件

後処理

1. 1
   その他to prepare a treating agent solution
2. 2
   その他to uniformly absorb the total amount of the above treating agent solution
3. 3
   その他air-dried for 2 hours at room temperature
4. 4
   workup.ADDITIONThe dried cloth was heat-treated for 20 minutes at 140° C. in a batch type hot air oven (“IPHH-2000”, an inert oven manufactured by Tabaiesbeck Co., Ltd.)
5. 5
   洗浄washed with water
6. 6
   洗浄It was further washed with 5% aqueous sodium bicarbonate solution
7. 7
   洗浄rinsed three times with water
8. 8
   洗浄subsequently was washed with 10% aqueous citric acid solution
9. 9
   洗浄rinsed three times with water
10. 10
    洗浄finally washed with household
11. 11
    洗浄washing detergent solution
12. 12
    洗浄rinsed with water
13. 13
    その他air-dried

実験手順

20.88 Grams (90 mmol) of L-lysine methyl ester dihydrochloride was dissolved in 18 ml of methanol, and 45 ml of 2 N aqueous sodium hydroxide solution was added thereto to prepare a treating agent solution. An untreated cotton cloth (480 mm×510 mm, 45 g) was allowed to uniformly absorb the total amount of the above treating agent solution and then air-dried for 2 hours at room temperature. The dried cloth was heat-treated for 20 minutes at 140° C. in a batch type hot air oven (“IPHH-2000”, an inert oven manufactured by Tabaiesbeck Co., Ltd.) and washed with water. It was further washed with 5% aqueous sodium bicarbonate solution and rinsed three times with water and subsequently was washed with 10% aqueous citric acid solution and rinsed three times with water, and finally washed with household washing detergent solution, rinsed with water and air-dried. A part of the cloth was cut and a solution of ninhydrin in butanol was sprayed on it. Thereafter, it was heated for 10 minutes in an oven of 110° C. to cause coloring thereby the presence of the amino acid was confirmed. Also, a part of the cloth was cut and subjected to an infrared spectroscopic analysis whereby there was confirmed a peak based on ester bond at 1742 cm−1. As a result of determination for the amount of the L-lysine bonded, it was 0.10 mmol based on 1 g of the cloth. The degree of esterfication was 0.0 16.

出典