Methyl iodide → HCID 86714020, compound

HRID 576305Notes

Reaction equation

HRID 576305 reaction equation
[CH2:1]([O:8][C@H:9]1[C@H:14]([O:15][CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[C@@H:13]([O:23][CH2:24][C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[CH:12]([C:31]2[CH:39]=[C:38]([CH2:40][C:41]3[CH:46]=[CH:45][C:44]([O:47][CH3:48])=[CH:43][CH:42]=3)[C:37](Br)=[C:36]3[C:32]=2[CH2:33][CH2:34][CH2:35]3)[O:11][C@@H:10]1[CH2:50][O:51][CH2:52][C:53]1[CH:58]=[CH:57][CH:56]=[CH:55][CH:54]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[Li][CH2:60]CCC.IC>C1COCC1>[CH2:1]([O:8][C@H:9]1[C@H:14]([O:15][CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[C@@H:13]([O:23][CH2:24][C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[CH:12]([C:31]2[CH:39]=[C:38]([CH2:40][C:41]3[CH:46]=[CH:45][C:44]([O:47][CH3:48])=[CH:43][CH:42]=3)[C:37]([CH3:60])=[C:36]3[C:32]=2[CH2:33][CH2:34][CH2:35]3)[O:11][C@@H:10]1[CH2:50][O:51][CH2:52][C:53]1[CH:58]=[CH:57][CH:56]=[CH:55][CH:54]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 6328Methyl iodideHCID 86714019HCID 86714019, compoundHCID 178418339Butyllithium

Product 1

HCID 86714020HCID 86714020, compound

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Conditions

Temperature
0 °C

Procedure

To a solution of the intermediate 17 (0.95 g, 1.13 mmol) in anhydrous THF (12.0 mL) were added dropwise n-BuLi (2.5M in hexane, 0.72 mL, 1.81 mmol) at −78° C. under nitrogen atmosphere, and the mixture was stirred for 0.5 h at the same temperature. Then a solution of iodomethane (0.13 mL, 2.03 mmol) in THF (1.0 mL) was added dropwise, and the mixture was slowly warmed up to 0° C. for 3 h. The reaction mixture was quenched with 1M HCl solution (30 mL) and extracted with EtOAc (50 mL). The organic layer was washed with brine, dried over anhydrous MgSO4, filtered and concentrated in vacuo to provide the crude intermediate 20, which was used without further purification (0.88 g, 1.13 mmol, 100%).

Workup

  1. customThe reaction mixture was quenched with 1M HCl solution (30 mL)
  2. extractionextracted with EtOAc (50 mL)
  3. washThe organic layer was washed with brine
  4. dry with materialdried over anhydrous MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-9fbbf6630b8c4dbeaba2134173876e52
Source dataset
uspto-grants-2015_05
Patent number
US09034921B2

Reaction notes

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