Water → HCID 67542568, compound

HRID 2354949Notes

Reaction equation

[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][C@H:11]([C:14]2[CH:15]=[C:16]([C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=3)[CH:17]=[CH:18][CH:19]=2)[C@@H:10]([OH:26])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[H-].[Na+].Br[CH2:30][C:31]1[CH:40]=[CH:39][C:38]2[C:33](=[CH:34][CH:35]=[CH:36][CH:37]=2)[CH:32]=1.O>CC(N(C)C)=O>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][C@H:11]([C:14]2[CH:15]=[C:16]([C:20]3[CH:21]=[CH:22][CH:23]=[CH:24][CH:25]=3)[CH:17]=[CH:18][CH:19]=2)[C@@H:10]([O:26][CH2:30][C:31]2[CH:40]=[CH:39][C:38]3[C:33](=[CH:34][CH:35]=[CH:36][CH:37]=3)[CH:32]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

Participants

Conditions

Temperature: 50 °C

Procedure

A suspension of the title B compound, (3R*,4R*)-4-biphenyl-3-yl-3-hydroxy-piperidine-1-carboxylic acid t-butyl ester (318 mg, 0.9 mmol) and sodium hydride (60% dispersion in mineral oil, 72 mg, 1.8 mmol) in 8 mL of dry DMA is shaken for 10 min. at 50° C. After cooling to RT, 2-(bromomethyl)naphthalene (298 mg, 1.35 mmol) is added and the mixture shaken for 16 h at 50° C. After addition of H2O, the aqueous layer is extracted twice with ethyl acetate. The combined organic extracts are dried (Na2SO4) and evaporated in vacuo. Flash chromatography of the residue (SiO2, hexane/ethyl acetate) affords (3R*,4R*)-4-biphenyl-3-yl-3-(naphthalen-2-ylmethoxy)-piperidine-1-carboxylic acid tert-butyl ester as a yellowish viscous oil: MS (LC/MS) 494.2 [M+H]+; Rf 0.30 (hexane/ethyl acetate 8:2).

Workup

temperatureAfter cooling to RT
stirringthe mixture shaken for 16 h at 50° C
extractionthe aqueous layer is extracted twice with ethyl acetate
dry with materialThe combined organic extracts are dried (Na2SO4)
customevaporated in vacuo

Sources & evidence

ORD record: ord-d243944e3aee4c3c947e98fcba358051
Source dataset: uspto-grants-2010_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07754727B2

Reaction notes

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