反应详情

A four-necked flask fitted with stirrer and condenser means was charged with 81 g of oleylmethyldihydroxyethylammonium chloride, 33 g of cystine potassium salt and 200 g of isopropyl alcohol and the reaction was conducted at 65°-75° C. in an atmosphere of nitrogen gas introduced at a low flow rate for 7 hours. The precipitate was then filtered off and the filtrate was concentrated under reduced pressure. The residue was dissolved in 200 g of toluene and the insolubles were filtered off. Finally, the filtrate was concentrated to give 95.2 g (theoretical yield 97.8 g) of di(oleylmethyldihydroxyethylammonium) cystinate as a waxy product.

1. customA four-necked flask fitted with stirrer and condenser means
2. customwas conducted at 65°-75° C. in an atmosphere of nitrogen gas
3. additionintroduced at a low flow rate for 7 hours
4. filtrationThe precipitate was then filtered off
5. concentrationthe filtrate was concentrated under reduced pressure
6. dissolutionThe residue was dissolved in 200 g of toluene
7. filtrationthe insolubles were filtered off
8. concentrationFinally, the filtrate was concentrated