Sodium Carbonate → (S)-ethyl 2-(tert-butoxy)-2-(4-(4,4-dimethylpiperidin-1-yl)-5-(4-((4-fluorobenzyl)oxy)phenyl)-2,6-dimethylpyridin-3-yl)acetate

HRID 718339Notes

Reaction equation

HRID 718339 reaction equation
Br[C:2]1[C:3]([N:21]2[CH2:26][CH2:25][C:24]([CH3:28])([CH3:27])[CH2:23][CH2:22]2)=[C:4]([C@H:10]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])[C:11]([O:13][CH2:14][CH3:15])=[O:12])[C:5]([CH3:9])=[N:6][C:7]=1[CH3:8].[F:29][C:30]1[CH:46]=[CH:45][C:33]([CH2:34][O:35][C:36]2[CH:41]=[CH:40][C:39](B(O)O)=[CH:38][CH:37]=2)=[CH:32][CH:31]=1.C([O-])([O-])=O.[Na+].[Na+]>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>[C:17]([O:16][C@@H:10]([C:4]1[C:5]([CH3:9])=[N:6][C:7]([CH3:8])=[C:2]([C:39]2[CH:38]=[CH:37][C:36]([O:35][CH2:34][C:33]3[CH:32]=[CH:31][C:30]([F:29])=[CH:46][CH:45]=3)=[CH:41][CH:40]=2)[C:3]=1[N:21]1[CH2:26][CH2:25][C:24]([CH3:28])([CH3:27])[CH2:23][CH2:22]1)[C:11]([O:13][CH2:14][CH3:15])=[O:12])([CH3:20])([CH3:19])[CH3:18]

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 16218069B-(4-((4-Fluorophenyl)methoxy)phenyl)boronic acidHCID 118314215Ethyl (S)-2-(5-bromo-4-(4,4-dimethylpiperidin-1-yl)-2,6-dimethylpyridin-3-yl)-2-(tert-butoxy)acetate

Product 1

HCID 118314204(S)-ethyl 2-(tert-butoxy)-2-(4-(4,4-dimethylpiperidin-1-yl)-5-(4-((4-fluorobenzyl)oxy)phenyl)-2,6-dimethylpyridin-3-yl)acetateYield 60.2%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 6228DimethylformamideSolvent

Procedure

A mixture of (S)-ethyl 2-(5-bromo-4-(4,4-dimethylpiperidin-1-yl)-2,6-dimethylpyridin-3-yl)-2-(tert-butoxy)acetate (0.049 g, 0.108 mmol), (4-((4-fluorobenzyl)oxy)phenyl)boronic acid (0.040 g, 0.161 mmol) and 2M Na2CO3 (0.134 ml, 0.269 mmol) in DMF (2 mL) was degassed for 10 min. Then, Pd(Ph3P)4 (0.012 g, 10.76 μmol) was added, degassed for 5 min and placed in a pre-heated oil bath at 100° C. After 1.5 h at 110° C., cooled and purified by prep-HPLC to afford (S)-ethyl 2-(tert-butoxy)-2-(4-(4,4-dimethylpiperidin-1-yl)-5-(4-((4-fluorobenzyl)oxy)phenyl)-2,6-dimethylpyridin-3-yl)acetate (0.0372 g, 0.065 mmol, 59.9% yield) as tan color solid. LCMS (M+H)=577.6.

Workup

  1. customwas degassed for 10 min
  2. customdegassed for 5 min
  3. customplaced in a pre-heated oil bath at 100° C
  4. temperaturecooled
  5. custompurified by prep-HPLC

Sources & evidence

ORD record
ord-cefc071cfc2e4456b1d97021ab7da709
Source dataset
uspto-grants-2015_11
Patent number
US09193720B2

Reaction notes

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