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ChemicalBook CAS DataBase List Salmeterol
89365-50-4

Salmeterol synthesis

7synthesis methods
-

Yield:89365-50-4 98.5%

Reaction Conditions:

with hydrogen;palladium 10% on activated carbon in methanol at 40; under 3677.86 - 4413.43 Torr; for 2 h;

Steps:

8

Example-8: Preparation of Salmeterol Base [II]800 mL methanol and 100 g 2-(benzyl-(6-(4-phenylbutoxy)hexyl)amino)-l-(4- (benzyloxy)-3-(hydroxymethyl)phenyl)ethanol (III) were taken in dry hydrogenator at 35°C under' nitrogen atmosphere. 3 g of 10% Pd/C was added into the reaction mixture and hydrogen gas was purged at 5-6 Kg/cm2 hydrogen pressure at 40°C. The reaction mixture was maintained for 2 hour and cooled to 25°C. The reaction mixture was filtered and washed with 100 ml methanol. The filtrate was concentrated under vacuum at 60°C to obtain 68 g (98.5%) Salmeterol base as oily residue.

References:

WO2012/32546,2012,A2 Location in patent:Page/Page column 29

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