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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 576214
Notes
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Reaction equation

HRID 576214 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
ParticipantsProcedureWorkupSources & evidenceReaction notes

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 44119782Bis(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-6d1e5fcc4e574324895fa6cedec64a99
Source dataset
uspto-grants-2015_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09035063B2

Reaction notes

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