2-Fluoro-3-methoxyphenylboronic acid → 3-[2(R)-tert-butoxycarbonylamino-2-cyclohexylethyl]-5-(2-fluoro-3-methoxyphenyl)-1-[2,6-difluorobenzyl]-6-methyl-pyrimidine-2,4(1H,3H)-dione

HRID 1744311Notes

Reaction equation

HRID 1744311 reaction equation
Br[C:2]1[C:3](=[O:35])[N:4]([CH2:19][C@H:20]([NH:27][C:28]([O:30][C:31]([CH3:34])([CH3:33])[CH3:32])=[O:29])[CH:21]2[CH2:26][CH2:25][CH2:24][CH2:23][CH2:22]2)[C:5](=[O:18])[N:6]([CH2:9][C:10]2[C:15]([F:16])=[CH:14][CH:13]=[CH:12][C:11]=2[F:17])[C:7]=1[CH3:8].[F:36][C:37]1[C:42]([O:43][CH3:44])=[CH:41][CH:40]=[CH:39][C:38]=1B(O)O>[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.CCO.COCCOC>[C:31]([O:30][C:28]([NH:27][C@H:20]([CH:21]1[CH2:26][CH2:25][CH2:24][CH2:23][CH2:22]1)[CH2:19][N:4]1[C:3](=[O:35])[C:2]([C:38]2[CH:39]=[CH:40][CH:41]=[C:42]([O:43][CH3:44])[C:37]=2[F:36])=[C:7]([CH3:8])[N:6]([CH2:9][C:10]2[C:15]([F:16])=[CH:14][CH:13]=[CH:12][C:11]=2[F:17])[C:5]1=[O:18])=[O:29])([CH3:34])([CH3:33])[CH3:32]

Participants

5

Reactant 2

HCID 49857442-Fluoro-3-methoxyphenylboronic acidHCID 210184025-bromo-3-[2(R)-tert-butoxycarbonylamino-2-cyclohexylethyl]-1-[2,6-difluorobenzyl]-6-methyl-pyrimidine-2,4(1H,3H)-dione

Product 1

HCID 589650063-[2(R)-tert-butoxycarbonylamino-2-cyclohexylethyl]-5-(2-fluoro-3-methoxyphenyl)-1-[2,6-difluorobenzyl]-6-methyl-pyrimidine-2,4(1H,3H)-dioneYield 32.3%

Reagents, catalysts & solvents 2

HCID 11979704Tetrakis(triphenylphosphine)palladiumCatalystHCID 20074477Dimethoxyethane ethanolSolvent

Conditions

Temperature
80 °C

Procedure

5-Bromo-3-[2(R)-tert-butoxycarbonylamino-2-cyclohexylethyl]-1-[2,6-difluorobenzyl]-6-methyl-pyrimidine-2,4(1H,3H)-dione 11b (1.0 g, 1.79 mmol) in bezene/EtOH/ethylene glycol dimethyl ether (20/2/22 mL) was added 2-fluoro-3-methoxyphenylboronic acid (382 mg, 2.24 mmol) and saturated Ba(OH)2/water (˜0.5 M, 15 mL). The reaction mixture was deoxygenated with N2 for 10 minutes, tetrakis(triphenylphosphine) palladium (0) (208 mg, 0.18 mmol) was added and the reaction mixture was heated at 80° C. overnight under N2. The reaction mixture was partitioned between brine and EtOAc. The organic layer was dried (sodium sulfate), evaporated, and purified by flash chromatography (silica, 30% EtOAc/hexanes) to give compound 11c (348 mg, 32.3%). MS (CI) m/z 502.2 (MH+−Boc).

Workup

  1. customThe reaction mixture was deoxygenated with N2 for 10 minutes
  2. customThe reaction mixture was partitioned between brine and EtOAc
  3. dry with materialThe organic layer was dried (sodium sulfate)
  4. customevaporated
  5. custompurified by flash chromatography (silica, 30% EtOAc/hexanes)

Sources & evidence

ORD record
ord-351a7f8a219047d987f582d116706b4c
Source dataset
uspto-grants-2006_03
Patent number
US07015226B2

Reaction notes

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