Methyl iodide → 3-Bromo-9-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl methoxy)-5,6,6-trimethyl-5,6-dihydro-benzo[b]carbazol-11-one

HRID 61806Notes

Reaction equation

HRID 61806 reaction equation
[Br:1][C:2]1[CH:14]=[C:13]2[C:5]([C:6]3[C:7](=[O:30])[C:8]4[CH:20]=[C:19]([O:21][CH2:22][C@H:23]5[CH2:27][O:26][C:25]([CH3:29])([CH3:28])[O:24]5)[CH:18]=[CH:17][C:9]=4[C:10]([CH3:16])([CH3:15])[C:11]=3[NH:12]2)=[CH:4][CH:3]=1.[H-].[Na+].[CH3:33]C(N(C)C)=O.CI>O>[Br:1][C:2]1[CH:14]=[C:13]2[C:5]([C:6]3[C:7](=[O:30])[C:8]4[CH:20]=[C:19]([O:21][CH2:22][C@H:23]5[CH2:27][O:26][C:25]([CH3:29])([CH3:28])[O:24]5)[CH:18]=[CH:17][C:9]=4[C:10]([CH3:16])([CH3:15])[C:11]=3[N:12]2[CH3:33])=[CH:4][CH:3]=1

Participants

6

Reactant 4

HCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 31374DimethylacetamideHCID 668343293-Bromo-9-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl methoxy)-6,6-dimethyl-5,6-dihydro-benzo[b]carbazol-11-one

Product 1

HCID 668349303-Bromo-9-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl methoxy)-5,6,6-trimethyl-5,6-dihydro-benzo[b]carbazol-11-oneYield 91%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

To the mixture of 3-bromo-9-((S)-2,2-dimethyl-[1,3]dioxolan-4-ylmethoxy)-6,6-dimethyl-5,6-dihydro-benzo[b]carbazol-11-one (Compound JJ3-1, 33.2 mg, 0.0706 mmol) and sodium hydride (60% in oil, 6.4 mg, 2.3 eq.), DMA (0.55 mL) and methyl iodide (0.015 mL, 3.4 eq.) were added under nitrogen atmosphere at 0° C., and the mixture was stirred at room temperature overnight. The reaction solution was added with water and extracted with ethyl acetate. The organic layer was washed with brine and dried over magnesium sulfate. After filtration and the concentration under reduced pressure, the resulting solid was washed with MTBE to obtain the title compound (white solid, 31.2 mg, 91%).

Workup

  1. additionwere added under nitrogen atmosphere at 0° C.
  2. extractionextracted with ethyl acetate
  3. washThe organic layer was washed with brine
  4. dry with materialdried over magnesium sulfate
  5. filtrationAfter filtration
  6. concentrationthe concentration under reduced pressure
  7. washthe resulting solid was washed with MTBE

Sources & evidence

ORD record
ord-4020b58d80de4c9ab93a28f431612535
Source dataset
uspto-grants-2016_09
Patent number
US09440922B2

Reaction notes

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