Cesium carbonate → N-(4-(2-(benzyloxy)ethoxy)-3-(trifluoromethyl)phenyl)-2-(4-(5-ethoxy-6-((4-methoxybenzyl)oxy)pyridin-3-yl)-2-fluorophenyl)acetamide

HRID 1050078Notes

Reaction equation

HRID 1050078 reaction equation
[CH2:1]([O:8][CH2:9][CH2:10][O:11][C:12]1[CH:17]=[CH:16][C:15]([NH:18][C:19](=[O:29])[CH2:20][C:21]2[CH:26]=[CH:25][C:24](Br)=[CH:23][C:22]=2[F:28])=[CH:14][C:13]=1[C:30]([F:33])([F:32])[F:31])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH2:34]([O:36][C:37]1[C:38]([O:52][CH2:53][C:54]2[CH:59]=[CH:58][C:57]([O:60][CH3:61])=[CH:56][CH:55]=2)=[N:39][CH:40]=[C:41](B2OC(C)(C)C(C)(C)O2)[CH:42]=1)[CH3:35].C([O-])([O-])=O.[Cs+].[Cs+]>O1CCOCC1.O.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[CH2:1]([O:8][CH2:9][CH2:10][O:11][C:12]1[CH:17]=[CH:16][C:15]([NH:18][C:19](=[O:29])[CH2:20][C:21]2[CH:26]=[CH:25][C:24]([C:41]3[CH:40]=[N:39][C:38]([O:52][CH2:53][C:54]4[CH:55]=[CH:56][C:57]([O:60][CH3:61])=[CH:58][CH:59]=4)=[C:37]([O:36][CH2:34][CH3:35])[CH:42]=3)=[CH:23][C:22]=2[F:28])=[CH:14][C:13]=1[C:30]([F:33])([F:32])[F:31])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

7

Reactant 3

HCID 10796Cesium carbonateHCID 90416157N-(4-(2-(benzyloxy)ethoxy)-3-(trifluoromethyl)phenyl)-2-(4-bromo-2-fluorophenyl)acetamideHCID 904167753-Ethoxy-2-((4-methoxybenzyl)oxy)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine

Product 1

HCID 90415483N-(4-(2-(benzyloxy)ethoxy)-3-(trifluoromethyl)phenyl)-2-(4-(5-ethoxy-6-((4-methoxybenzyl)oxy)pyridin-3-yl)-2-fluorophenyl)acetamideYield 21.5%

Reagents, catalysts & solvents 3

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 962WaterSolvent2×HCID 312751,4-DioxaneSolvent2×

Procedure

A suspension of N-(4-(2-(benzyloxy)ethoxy)-3-(trifluoromethyl)phenyl)-2-(4-bromo-2-fluorophenyl)acetamide (800 mg, 1.520 mmol) in 1,4-dioxane (3 mL) and H2O (1 mL) was added to a solution of 3-ethoxy-2-((4-methoxybenzyl)oxy)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (586 mg, 1.520 mmol) in 1,4-dioxane (3 mL) and H2O (1 mL). PdCl2(dppf) (111 mg, 0.152 mmol) and Cs2CO3 (990 mg, 3.04 mmol) were added and the mixture was at 110° C. for 30 min under microwave. The mixture was cooled to rt. Then the solution was concentrated and distributed between EA and saturated NaHCO3 solution. The combined organic extract was washed with brine, dried over MgSO4, filtered and concentrated. The crude material was purified by preparative TLC (PE/EA=1/1, Rf=0.5) to yield a light yellow solid of N-(4-(2-(benzyloxy)ethoxy)-3-(trifluoromethyl)phenyl)-2-(4-(5-ethoxy-6-((4-methoxybenzyl)oxy)pyridin-3-yl)-2-fluorophenyl)acetamide (230 mg, 0.326 mmol, 21.5% yield): 1H NMR (400 MHz, CD3OD) δ 7.95-7.94 (d, J=2.0 Hz, 1H), 7.90-7.89. (d, J=2.8 Hz, 1H), 7.45-7.38 (m, 6H), 7.37-7.25 (m, 6H), 6.92-6.90 (m, 2H), 5.36 (s, 2H), 4.61 (s, 2H), 4.25-4.24 (m, 2H), 4.23-4.11 (m, 2H), 3.85-3.83 (m, 2H), 3.79-3.77 (m, 2H), 1.45-1.41 (t, J=4.8 Hz, 3H); ES-LCMS m/z 705.1 (M+H).

Workup

  1. concentrationThen the solution was concentrated
  2. extractionThe combined organic extract
  3. washwas washed with brine
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe crude material was purified by preparative TLC (PE/EA=1/1, Rf=0.5)

Sources & evidence

ORD record
ord-7097ff2147f545b9bef357cbbbb9c2c6
Source dataset
uspto-grants-2016_07
Patent number
US09382238B2

Reaction notes

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