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Triethylamine → 2-cyclohexyl-8-[(E)-2-(2-methyl-1H-indol-4-yl)-ethenesulfonyl]-1,3,8-triaza-spiro[4.5]dec-1-en-4-one

HRID 1755002
Notes
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Reaction equation

HRID 1755002 reaction equation
[CH:1]1([C:7]2[NH:11][C:10](=[O:12])[C:9]3([CH2:17][CH2:16][N:15]([S:18]([CH:21]=[CH2:22])(=[O:20])=[O:19])[CH2:14][CH2:13]3)[N:8]=2)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[CH3:23][C:24]1[NH:25][C:26]2[C:31]([CH:32]=1)=[C:30](OS(C(F)(F)F)(=O)=O)[CH:29]=[CH:28][CH:27]=2.C(N(CC)CC)C>O1CCOCC1>[CH:1]1([C:7]2[NH:11][C:10](=[O:12])[C:9]3([CH2:17][CH2:16][N:15]([S:18](/[CH:21]=[CH:22]/[C:30]4[CH:29]=[CH:28][CH:27]=[C:26]5[C:31]=4[CH:32]=[C:24]([CH3:23])[NH:25]5)(=[O:20])=[O:19])[CH2:14][CH2:13]3)[N:8]=2)[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 113579362-methyl-1H-indol-4-yl trifluoromethanesulfonateHCID 668163772-Cyclohexyl-8-ethenesulfonyl-1,3,8-triaza-spiro[4.5]dec-1-en-4-one

Product 1

HCID 668161722-cyclohexyl-8-[(E)-2-(2-methyl-1H-indol-4-yl)-ethenesulfonyl]-1,3,8-triaza-spiro[4.5]dec-1-en-4-oneYield 14%

Reagents, catalysts & solvents 1

HCID 31275
1,4-Dioxane
Solvent

Conditions

Temperature
100 °C

Procedure

A mixture of 2-cyclohexyl-8-ethenesulfonyl-1,3,8-triaza-spiro[4.5]dec-1-en-4-one (100 mg, 0.307 mmol), trifluoro-methanesulfonic acid 2-methyl-1H-indol-4-yl ester (129 mg, 0.462 mmol), tetrakistriphenylphosphine palladium(0) (35 mg, 30.2 μmol) and triethylamine (130 μL, 0.933 mmol) in 1,4-dioxane (1.5 ml) was heated with stirring at 100° C. for 18 hours. The reaction mixture was cooled, and then quenched with water and extracted with ethyl acetate. The organic layer was washed with saturated brine, and then dried over anhydrous sodium sulfate and concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography to give 2-cyclohexyl-8-[(E)-2-(2-methyl-1H-indol-4-yl)-ethenesulfonyl]-1,3,8-triaza-spiro[4.5]dec-1-en-4-one (19.3 mg, 14%).

Workup

  1. temperaturewas heated
  2. temperatureThe reaction mixture was cooled
  3. customquenched with water
  4. extractionextracted with ethyl acetate
  5. washThe organic layer was washed with saturated brine
  6. dry with materialdried over anhydrous sodium sulfate
  7. concentrationconcentrated under reduced pressure
  8. customThe resulting residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-633c64a717c44fa8abb91e300051c419
Source dataset
uspto-grants-2015_10
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09169254B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes