Cesium carbonate → Methyl 4-[[5-[4-[tert-butyl(dimethyl)silyl]oxy-1-piperidyl]-2-(trifluoromethyl)benzoyl]amino]-3,5-dimethyl-benzoate

HRID 239993Notes

Reaction equation

HRID 239993 reaction equation
Br[C:2]1[CH:3]=[CH:4][C:5]([C:23]([F:26])([F:25])[F:24])=[C:6]([CH:22]=1)[C:7]([NH:9][C:10]1[C:19]([CH3:20])=[CH:18][C:13]([C:14]([O:16][CH3:17])=[O:15])=[CH:12][C:11]=1[CH3:21])=[O:8].[C:27]([Si:31]([CH3:40])([CH3:39])[O:32][CH:33]1[CH2:38][CH2:37][NH:36][CH2:35][CH2:34]1)([CH3:30])([CH3:29])[CH3:28].C([O-])([O-])=O.[Cs+].[Cs+].C1(P(C2CCCCC2)C2C=CC=CC=2C2C(OC)=CC=CC=2OC)CCCCC1>O1CCOCC1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[Si:31]([O:32][CH:33]1[CH2:34][CH2:35][N:36]([C:2]2[CH:3]=[CH:4][C:5]([C:23]([F:26])([F:25])[F:24])=[C:6]([CH:22]=2)[C:7]([NH:9][C:10]2[C:19]([CH3:20])=[CH:18][C:13]([C:14]([O:16][CH3:17])=[O:15])=[CH:12][C:11]=2[CH3:21])=[O:8])[CH2:37][CH2:38]1)([C:27]([CH3:30])([CH3:29])[CH3:28])([CH3:40])[CH3:39]

Participants

7

Reactant 4

HCID 10796Cesium carbonateHCID 112698722-Dicyclohexylphosphino-2',6'-dimethoxybiphenylHCID 114813284-((Tert-butyldimethylsilyl)oxy)piperidineHCID 86707378Methyl 4-[[5-bromo-2-(trifluoromethyl)benzoyl]amino]-3,5-dimethyl-benzoate

Product 1

HCID 86707379Methyl 4-[[5-[4-[tert-butyl(dimethyl)silyl]oxy-1-piperidyl]-2-(trifluoromethyl)benzoyl]amino]-3,5-dimethyl-benzoateYield 80%

Reagents, catalysts & solvents 2

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
120 °C

Procedure

To a solution of methyl 4-[[5-bromo-2-(trifluoromethyl)benzoyl]amino]-3,5-dimethyl-benzoate (0.10 g, 232.44 μmol), tert-butyl-dimethyl-(4-piperidyloxy)silane (55.08 mg, 255.68 μmol, see preparation 3) and Cs2CO3 (227.2 mg, 697.32 μmol) in 1,4-dioxane (2.5 ml) is added Pd2(dba)3 (21.28 mg, 23.24 μmol) followed by 2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl (S-Phos) (9.54 mg, 23.24 μmol). The reaction mixture is purged with nitrogen for 5 minutes and then heated at 120° C. After 8 hours, the reaction is cooled to ambient temperature, filtered through Celite™, and washed with EtOAc. The combined filtrates are dried over sodium sulfate, filtered, and concentrated under reduced pressure and purified by flash chromatography (neutral alumina) using of 15%-85% ethyl acetate in hexanes as eluent to afford the title compound as a pale yellow oil (0.10 g, 80%). Mass spectrum (m/z): 565.4 (M+1).

Workup

  1. customThe reaction mixture is purged with nitrogen for 5 minutes
  2. temperaturethe reaction is cooled to ambient temperature
  3. filtrationfiltered through Celite™
  4. washwashed with EtOAc
  5. dry with materialThe combined filtrates are dried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. custompurified by flash chromatography (neutral alumina)

Sources & evidence

ORD record
ord-34dc1a56078049a5aa0cb0ea8ee9ebe5
Source dataset
uspto-grants-2014_02
Patent number
US08642768B2

Reaction notes

Loading…