Nafoxidine Hydrochloride → rac 7-Methoxy Lasofoxifene

HRID 617280Notes

Reaction equation

HRID 617280 reaction equation
Cl.[CH3:2][O:3][C:4]1[CH:5]=[C:6]2[C:11](=[CH:12][CH:13]=1)[C:10]([C:14]1[CH:27]=[CH:26][C:17]([O:18][CH2:19][CH2:20][N:21]3[CH2:25][CH2:24][CH2:23][CH2:22]3)=[CH:16][CH:15]=1)=[C:9]([C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1)[CH2:8][CH2:7]2>C(O)C.[OH-].[OH-].[Pd+2]>[CH3:2][O:3][C:4]1[CH:5]=[C:6]2[C:11](=[CH:12][CH:13]=1)[C@@H:10]([C:14]1[CH:27]=[CH:26][C:17]([O:18][CH2:19][CH2:20][N:21]3[CH2:25][CH2:24][CH2:23][CH2:22]3)=[CH:16][CH:15]=1)[C@@H:9]([C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1)[CH2:8][CH2:7]2

Participants

4

Reactant 1

HCID 15805Nafoxidine Hydrochloride

Product 1

HCID 11373717rac 7-Methoxy LasofoxifeneYield 93.4%

Reagents, catalysts & solvents 2

HCID 9942167Palladium hydroxideCatalystHCID 702EthanolSolvent

Procedure

A solution of 1-{2-[4-(6-methoxy-2-phenyl-3,4-dihydronaphthalen-1-yl)phenoxy]ethyl}pyrrolidine hydrochloride (nafoxidene hydrochloride) (1.0 g, 2.16 mmol) in 20 mL of absolute ethanol containing 1.0 g of palladium hydroxide on carbon was hydrogenated at 50 psi at 20° C. for 19 hours. Filtration and evaporation provided 863 mg (93%) of cis-1-{2-[4-(6-methoxy-2-phenyl-1,2,3,4-tetrahydronaphthalen-1-yl)phenoxy]ethyl}pyrrolidine: 1H-NMR (CDCl3): d 3.50-3.80 (m, 3H), 3.85 (s, 3H), 4.20-4.40 (m, 3H), 6.80-7.00 (m, 3H); MS 428 (P+ +1).

Workup

  1. filtrationFiltration and evaporation

Sources & evidence

ORD record
ord-3967195379f940599712e3051ae1d9f1
Source dataset
uspto-grants-1999_09
Patent number
US05948809

Reaction notes

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