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ChemicalBook CAS DataBase List nalbuphine
20594-83-6

nalbuphine synthesis

14synthesis methods
23277-43-2 Synthesis
NALBUPHINE HYDROCHLORIDE

23277-43-2
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nalbuphine

20594-83-6
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Yield: 97%

Reaction Conditions:

with hydrogenchloride;potassium carbonate;sodium chloride in water; pH=9.3

Steps:

1
Nalbuphine hydrochloride dihydrate (600 mg, from Sigma) was dissolved in water (100 mL). Saturated aqueous K2CO3 was added and then adjusted the pH to 9.3 with 1 N HCl solution, saturated with sodium chloride. The solution was extracted with dichloromethane (5 x 25 mL). The combined organic solution was washed with brine (100 mL), dried over Na2SO4, concentrated to dryness and dried under high vacuum to yield nalbuphine (483.4 mg, 97% recovery). The product was confirmed by 1H-NMR in CDCl3.

References:

Location in patent:Page/Page column 42

17247-58-4 Synthesis
(Bromomethyl)cyclobutane

17247-58-4
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58477-92-2 Synthesis
6α-Noroxymorphol

58477-92-2
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nalbuphine

20594-83-6
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