1,2-Dimethoxyethane → HCID 178493042, compound

HRID 1918906Notes

Reaction equation

HRID 1918906 reaction equation
Br[C:2]1[CH:3]=[C:4]([NH:10][C:11]2[CH:15]=[C:14]([O:16][CH3:17])[NH:13][N:12]=2)[C:5](=[O:9])[N:6]([CH3:8])[CH:7]=1.[C:18]([O:21][CH2:22][C:23]1[C:28](B2OC(C)(C)C(C)(C)O2)=[CH:27][CH:26]=[CH:25][C:24]=1[N:38]1[CH2:50][CH2:49][N:41]2[C:42]3[CH2:43][CH2:44][CH2:45][CH2:46][C:47]=3[CH:48]=[C:40]2[C:39]1=[O:51])(=[O:20])[CH3:19].COCCOC.C(=O)([O-])[O-].[Na+].[Na+]>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.CO.CCOCC.O.CCOC(C)=O>[C:18]([O:21][CH2:22][C:23]1[C:24]([N:38]2[CH2:50][CH2:49][N:41]3[C:42]4[CH2:43][CH2:44][CH2:45][CH2:46][C:47]=4[CH:48]=[C:40]3[C:39]2=[O:51])=[CH:25][CH:26]=[CH:27][C:28]=1[C:2]1[CH:3]=[C:4]([NH:10][C:11]2[CH:15]=[C:14]([O:16][CH3:17])[NH:13][N:12]=2)[C:5](=[O:9])[N:6]([CH3:8])[CH:7]=1)(=[O:20])[CH3:19]

Participants

10

Reactant 4

HCID 80711,2-DimethoxyethaneHCID 10340Sodium CarbonateHCID 580438772-(2-(Acetoxymethyl)-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-1(2H)-oneHCID 178493041HCID 178493041, compound

Product 1

HCID 178493042HCID 178493042, compoundYield 19.8%

Reagents, catalysts & solvents 5

HCID 178418397HCID 178418397, compoundCatalystHCID 887MethanolSolventHCID 962WaterSolventHCID 3283Diethyl EtherSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
130 °C

Procedure

A microwave tube equipped with a magnetic stirrer was charged with 157a (94 mg, 0.3 mmol), 2-(1-oxo-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-2(1H)-yl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl acetate 114a (180 mg, 0.4 mmol), DME (4 mL) and 1M aqueous sodium carbonate (0.9 mL). After bubbling N2 for 15 min, Pd(PPh3)4 (18 mg, 0.02 mmol) was added. The mixture was heated in microwave to 130° C. for 25 min. After this time, EtOAc (5 mL) and water (5 mL) were added. The separated aqueous layer was extracted with EtOAc (2×5 mL). The combined organics were washed with brine (10 mL), dried over sodium sulfate, filtered and concentrated under reduced pressure. The resulting residue was purified by column chromatography eluting with a gradient of CH2Cl2-60:35:5 CH2Cl2:Et2O:MeOH to afford a 19% yield (33 mg) of 157b.

Workup

  1. customA microwave tube equipped with a magnetic stirrer
  2. customAfter bubbling N2 for 15 min
  3. extractionThe separated aqueous layer was extracted with EtOAc (2×5 mL)
  4. washThe combined organics were washed with brine (10 mL)
  5. dry with materialdried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customThe resulting residue was purified by column chromatography
  9. washeluting with a gradient of CH2Cl2-60:35:5 CH2Cl2

Sources & evidence

ORD record
ord-1aefd992fed44788b7bd012dbf1a86a0
Source dataset
uspto-grants-2013_12
Patent number
US08618107B2

Reaction notes

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