Cesium fluoride → 3-[4-[2-(benzyloxy)ethyl]phenyl]-5-[[1-(tert-butoxycarbonyl)-2(S)-azetidinyl]methoxy]pyridine

HRID 2095339Notes

Reaction equation

HRID 2095339 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:11][CH2:10][C@H:9]1[CH2:12][O:13][C:14]1[CH:15]=[N:16][CH:17]=[C:18]([Sn](C)(C)C)[CH:19]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH2:24]([O:31][CH2:32][CH2:33][C:34]1[CH:39]=[CH:38][C:37](I)=[CH:36][CH:35]=1)[C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1.[F-].[Cs+]>CN(C=O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.[Cu]I>[CH2:24]([O:31][CH2:32][CH2:33][C:34]1[CH:39]=[CH:38][C:37]([C:18]2[CH:17]=[N:16][CH:15]=[C:14]([O:13][CH2:12][C@@H:9]3[CH2:10][CH2:11][N:8]3[C:6]([O:5][C:1]([CH3:4])([CH3:3])[CH3:2])=[O:7])[CH:19]=2)=[CH:36][CH:35]=1)[C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1

Participants

7

Reactant 3

HCID 25953Cesium fluorideHCID 105744715-Iodo-A-85380, 5-trimethylstannyl N-boc derivativeHCID 593712971-[2-(Benzyloxy)ethyl]-4-iodobenzene

Product 1

HCID 593714143-[4-[2-(benzyloxy)ethyl]phenyl]-5-[[1-(tert-butoxycarbonyl)-2(S)-azetidinyl]methoxy]pyridineYield 59%

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418397HCID 178418397, compoundCatalystHCID 6228DimethylformamideSolvent

Conditions

Temperature
50 °C

Procedure

A solution/suspension of 3-[[1-(tert-butoxycarbonyl)-2(S)-azetidinyl]methoxy]-5-(trimethylstannyl)pyridine (427 mg, 1.00 mmol), 1-[2-(benzyloxy)ethyl]-4-iodobenzene (338 mg, 1.00 mmol), CsF (304 mg, 2.00 mmol), Pd(PPh3)4 (58 mg, 0.05 mmol) and CuI (19 mg, 0.10 mmol) in anhydrous DMF (5 mL) was stirred at 50° C. for 5 h under N2. The reaction mixture was cooled and concentrated under vacuum. The residue was applied onto a silica gel column, and the product was eluted with EtOAc/petroleum ether/Et3N 3:6:0.5 as the eluent to give the title compound (280 mg, 59%) as light-yellow oil. 1H NMR (CDCl3, 300 MHz) δ 8.48 (s, 1H), 8.33 (d, J=2.1 Hz, 1H), 7.55 (d, J=8.1 Hz, 2H), 7.48 (s, 1H), 7.37-7.29 (m, 7H), 4.57 (s, 3H), 4.42 (s, 1H), 4.24 (dd, J=7.2, 3.0 Hz, 1H), 3.93 (t, J=7.2 Hz, 2H), 3.75 (t, J=7.2 Hz, 2H), 3.00 (t, J=7.2 Hz, 2H), 2.43-2.30 (m, 2H), 1.42 (s, 9H). LC-MS (ESI) m/z 475 (M+H+).

Workup

  1. temperatureThe reaction mixture was cooled
  2. concentrationconcentrated under vacuum
  3. washthe product was eluted with EtOAc/petroleum ether/Et3N 3:6:0.5 as the eluent

Sources & evidence

ORD record
ord-a64d24049e834ba9a6c4479866a98822
Source dataset
uspto-grants-2013_05
Patent number
US08445684B2

Reaction notes

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