Acetyl chloride → HCID 58777387, compound

HRID 348217Notes

Reaction equation

HRID 348217 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]([N:33]2[C:37](=[O:38])[CH2:36][CH2:35][C@@H:34]2[CH2:39][OH:40])[CH:3]=1.[C:41](Cl)(=[O:43])[CH3:42].C(N(C(C)C)CC)(C)C.C([O-])(O)=O.[Na+]>O1CCCC1>[C:41]([O:40][CH2:39][C@H:34]1[CH2:35][CH2:36][C:37](=[O:38])[N:33]1[C:4]1[CH:3]=[C:2]([F:1])[CH:32]=[CH:31][C:5]=1[CH2:6][NH:7][C:8]([C:10]1[N:11]=[C:12]2[N:17]([C:18](=[O:28])[C:19]=1[O:20][CH2:21][C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1)[CH2:16][CH2:15][O:14][C:13]2([CH3:30])[CH3:29])=[O:9])(=[O:43])[CH3:42]

Participants

6

Reactant 4

HCID 6367Acetyl chlorideHCID 81531DiisopropylethylamineHCID 516892Sodium BicarbonateHCID 58777341(R)-N-(4-Fluoro-2-(2-(hydroxymethyl)-5-oxopyrrolidin-1-yl)benzyl)-3-(benzyloxy)-9,9-dimethyl-4-oxo-4,6,7,9-tetrahydropyrimido[2,1-c][1,4]oxazine-2-carboxamide

Product 1

HCID 58777387HCID 58777387, compoundYield 67%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
23 °C

Procedure

To a solution of intermediate 192, (R)-N-(4-fluoro-2-(2-(hydroxymethyl)-5-oxopyrrolidin-1-yl)benzyl)-3-(benzyloxy)-9,9-dimethyl-4-oxo-4,6,7,9-tetrahydropyrimido[2,1-c][1,4]oxazine-2-carboxamide (0.045 g, 0.082 mmol) in tetrahydrofuran (5 mL) was added acetyl chloride (12.8 μL, 0.180 mmol) and diisopropylethylamine (31.4 μL, 0.180 mmol). The reaction mixture was stirred at 23° C. for 4 h. NaHCO3 (1N in H2O, 30 mL) was then added and the organic material was extracted with ethyl acetate (2×25 mL). The combined organic extracts were dried (MgSO4), filtered and concentrated in vacuo. The residue was purified on a Biotage system using a silica gel column with ethyl acetate/Hexanes (1:1) to ethyl acetate 100% as eluent to afford the title compound (0.032 g, 67% yield): 1HNMR 400 MHz (MeOD) δ ppm: 7.48 (3H, m), 7.33 (3H, m), 7.16 (1H, m), 7.03 (1H, m), 5.24 (2H, s), 4.60 (1H, m), 4.55 (1H, m), 4.22 (1H, dd, J=12.0, 4.5 Hz), 4.08 (2H, t, J=5.0 Hz), 3.99 (3H, m), 2.62 (2H, m), 2.44 (1H, m), 2.09–1.92 (5H, m), 1.62 (3H, s), 1.61 (3H, s). LCMS (M+H)+ m/z 593.

Workup

  1. extractionthe organic material was extracted with ethyl acetate (2×25 mL)
  2. dry with materialThe combined organic extracts were dried (MgSO4)
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. customThe residue was purified on a Biotage system

Sources & evidence

ORD record
ord-787b0075b9e244a095bbd23b88d5f636
Source dataset
uspto-grants-2007_02
Patent number
US07176196B2

Reaction notes

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