Sodium Carbonate → N-(4-Fluoro-2-(2-methoxypyridin-3-yl)benzyl)-3-(benzyloxy)-9,9-dimethyl-4-oxo-4,6,7,9-tetrahydropyrimido[2,1-c][1,4]oxazine-2-carboxamide

HRID 1788199Notes

Reaction equation

HRID 1788199 reaction equation
[F:1][C:2]1[CH:32]=[CH:31][C:5]([CH2:6][NH:7][C:8]([C:10]2[N:11]=[C:12]3[N:17]([C:18](=[O:28])[C:19]=2[O:20][CH2:21][C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)[CH2:16][CH2:15][O:14][C:13]3([CH3:30])[CH3:29])=[O:9])=[C:4](I)[CH:3]=1.[CH3:34][O:35][C:36]1[C:41](B(O)O)=[CH:40][CH:39]=[CH:38][N:37]=1.C(=O)([O-])[O-].[Na+].[Na+]>C(#N)C.O.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>[F:1][C:2]1[CH:32]=[CH:31][C:5]([CH2:6][NH:7][C:8]([C:10]2[N:11]=[C:12]3[N:17]([C:18](=[O:28])[C:19]=2[O:20][CH2:21][C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)[CH2:16][CH2:15][O:14][C:13]3([CH3:30])[CH3:29])=[O:9])=[C:4]([C:41]2[C:36]([O:35][CH3:34])=[N:37][CH:38]=[CH:39][CH:40]=2)[CH:3]=1

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 2762709(2-Methoxypyridin-3-yl)boronic acidHCID 21070019N-(4-fluoro-2-iodobenzyl)-3-(benzyloxy)-9,9-dimethyl-4-oxo-4,6,7,9-tetrahydropyrimido[2,1-c][1,4]oxazine-2-carboxamide

Product 1

HCID 21069999N-(4-Fluoro-2-(2-methoxypyridin-3-yl)benzyl)-3-(benzyloxy)-9,9-dimethyl-4-oxo-4,6,7,9-tetrahydropyrimido[2,1-c][1,4]oxazine-2-carboxamideYield 72.6%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 6342AcetonitrileSolvent

Conditions

Temperature
90 °C

Procedure

Intermediate 174, N-(4-fluoro-2-iodobenzyl)-3-(benzyloxy)-9,9-dimethyl-4-oxo-4,6,7,9-tetrahydropyrimido[2,1-c][1,4]oxazine-2-carboxamide (0.350 g, 0.62 mmol) in a mixture of acetonitrile (12 ml) and water (12 ml) was treated with 2-methoxypyridin-3-ylboronic acid (0.190 g, 1.24 mmol), sodium carbonate (0.20 g, 1.88 mmol) and tetrakis(triphenylphosphine)palladium(0) (0.15 g). The reaction mixture was degassed, flushed with argon and heated at 90° C. for 30 min. The reaction mixture was then diluted with ethyl acetate, washed with water and brine, dried over anhydrous magnesium sulfate and concentrated. Chromatography of the residue on silica gel (elution gradient of ethyl acetate in hexane) gave 0.245 g (72% yield) of the title material as a white solid. 1HNMR 400 MHz (CDCl3) δ ppm: 1.63 (6H, s, 2×CH3), 3.89 (3H, s, OCH3), 4.04 (4H, m, 2×CH2), 4.37 (2H, broad, NCH2), 5.26 (2H, s, OCH2), 6.93 (1H,dd, J=2.5 Hz and J=9 Hz, aromatic), 7.0 (1H,dd, J=5 Hz and J=7 Hz, aromatic), 7.06 (1H, m, aromatic), 7.3-7.5 (8H, m, aromatics and NH), 8.24 (1H, m, aromatic). HRMS (ESI+) calculated for C30H30FN4O5 [M+H+]: 545.2200; found: 545.2184.

Workup

  1. customThe reaction mixture was degassed
  2. customflushed with argon
  3. additionThe reaction mixture was then diluted with ethyl acetate
  4. washwashed with water and brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-ca598f79145a471798d8307f7f242cfc
Source dataset
uspto-grants-2009_03
Patent number
US07511037B2

Reaction notes

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