Triphenylphosphine → HCID 68313148, compound

HRID 1530385Notes

Reaction equation

HRID 1530385 reaction equation
C(OC(N1CCC(C(O[C:21]2[CH:43]=[CH:42][C:24]3[C:25]4[N:29]([CH2:30][CH2:31][O:32][C:23]=3[CH:22]=2)[CH:28]=[C:27]([C:33]2[N:34]([CH:39]([CH3:41])[CH3:40])[N:35]=[C:36]([CH3:38])[N:37]=2)[N:26]=4)CC)CC1)=O)C1C=CC=CC=1.[C:44]([O:48][C:49]([N:51]1[CH2:57][CH2:56][CH2:55][CH:54]([CH:58]([OH:60])[CH3:59])[CH2:53][CH2:52]1)=[O:50])([CH3:47])([CH3:46])[CH3:45].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.CC(OC(/N=N/C(OC(C)C)=O)=O)C>O1CCOCC1.CCOC(C)=O>[C:44]([O:48][C:49]([N:51]1[CH2:57][CH2:56][CH2:55][CH:54]([CH:58]([O:60][C:21]2[CH:43]=[CH:42][C:24]3[C:25]4[N:29]([CH2:30][CH2:31][O:32][C:23]=3[CH:22]=2)[CH:28]=[C:27]([C:33]2[N:34]([CH:39]([CH3:41])[CH3:40])[N:35]=[C:36]([CH3:38])[N:37]=2)[N:26]=4)[CH3:59])[CH2:53][CH2:52]1)=[O:50])([CH3:47])([CH3:46])[CH3:45]

Participants

7

Reactant 4

HCID 11776TriphenylphosphineHCID 5363146Diisopropyl azodicarboxylateHCID 68312705HCID 68312705, compoundHCID 68312905HCID 68312905, compound

Product 1

HCID 68313148HCID 68313148, compoundYield 15%

Reagents, catalysts & solvents 2

HCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent

Procedure

To a suspension of 2-(2-isopropyl-5-methyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a-diazabenzo[e]azulen-8-ol from Example 4 (267 mg, 0.82 mmol), 4-(1-hydroxyethyl)azepane-1-carboxylic acid tertbutyl ester (300 mg, 1.23 mmol) and triphenylphosphine (365 mg, 1.39 mmol) in dioxane (3 mL) was added dropwise DIAD (273 ul, 1.39 mmol) and the reaction mixture was stirred at RT for 2 h. The mixture was then diluted with EtOAc and washed with aq. NaOH (1N). The aqueous phase was extracted with EtOAc (×3) and the combined organic layers were then washed with brine, dried over MgSO4 and concentrated in vacuo. The resulting residue was purified by column chromatography (Si-PCC, gradient 0-10% MeOH in DCM followed by Si-PCC, gradient 0-10% MeOH in EtOAc) affording the title compound as a colorless oil (60 mg, 15%). LCMS: RT 4.08 min [M+H]+ 551.2

Workup

  1. washwashed with aq. NaOH (1N)
  2. extractionThe aqueous phase was extracted with EtOAc (×3)
  3. washthe combined organic layers were then washed with brine
  4. dry with materialdried over MgSO4
  5. concentrationconcentrated in vacuo
  6. customThe resulting residue was purified by column chromatography (Si-PCC, gradient 0-10% MeOH in DCM followed by Si-PCC, gradient 0-10% MeOH in EtOAc)

Sources & evidence

ORD record
ord-802580a81d6140119489fee8d4fe39c7
Source dataset
uspto-grants-2015_07
Patent number
US09090628B2

Reaction notes

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