반응 #8955

반응 방정식

L-lysine n-propyl ester dihydrochloride

sodium hydroxide

→

L-lysine

용매

methanol

반응 조건

후처리

1. 1
   기타to prepare a treating agent solution
2. 2
   기타to uniformly absorb the total amount of the above treating agent solution
3. 3
   기타air-dried for an hour and 15 minutes 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
   세척washed with water
6. 6
   세척It was further washed with 5% aqueous sodium bicarbonate solution
7. 7
   세척rinsed three times with water
8. 8
   세척subsequently was washed with 10% aqueous citric acid solution
9. 9
   세척rinsed three times with water
10. 10
    세척finally washed with household
11. 11
    세척washing detergent solution
12. 12
    세척rinsed with water
13. 13
    기타air-dried

실험 절차

2.62 Grams (10 mmol) of L-lysine n-propyl ester dihydrochloride was dissolved in 2 ml of methanol, and 5 ml of 2 N aqueous sodium hydroxide solution was added thereto to prepare a treating agent solution. An untreated cotton cloth (160 mm×170 mm, 5.0 g) was allowed to uniformly absorb the total amount of the above treating agent solution and then air-dried for an hour and 15 minutes 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. As a result of determination for the amount of the bonded L-lysine, it was 0.08 mmol based on 1 g of the cloth. The degree of esterfication was 0.013.

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