Toluene → (R)-8-(2-azido-2-(4-methyl-1-oxo-1,3-dihydroisobenzofuran-5-yl)ethyl)-2-(4-methyl-5-oxo-2,5-dihydrofuran-3-yl)-2,8-diazaspiro[4.5]decan-1-one

HRID 1501853Notes

Reaction equation

HRID 1501853 reaction equation
O[C@@H:2]([C:22]1[CH:31]=[CH:30][C:25]2[C:26](=[O:29])[O:27][CH2:28][C:24]=2[C:23]=1[CH3:32])[CH2:3][N:4]1[CH2:21][CH2:20][C:7]2([C:11](=[O:12])[N:10]([C:13]3[CH2:14][O:15][C:16](=[O:19])[C:17]=3[CH3:18])[CH2:9][CH2:8]2)[CH2:6][CH2:5]1.C1(P([N:47]=[N+:48]=[N-:49])(C2C=CC=CC=2)=O)C=CC=CC=1.C1(C)C=CC=CC=1.C1CCN2C(=NCCC2)CC1>ClCCl>[N:47]([C@H:2]([C:22]1[C:23]([CH3:32])=[C:24]2[C:25](=[CH:30][CH:31]=1)[C:26](=[O:29])[O:27][CH2:28]2)[CH2:3][N:4]1[CH2:21][CH2:20][C:7]2([C:11](=[O:12])[N:10]([C:13]3[CH2:14][O:15][C:16](=[O:19])[C:17]=3[CH3:18])[CH2:9][CH2:8]2)[CH2:6][CH2:5]1)=[N+:48]=[N-:49]

Participants

6

Reactant 4

HCID 1140TolueneHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 199401P,P-Diphenylphosphinic azideHCID 729500758-[(2S)-2-hydroxy-2-(4-methyl-1-oxo-1,3-dihydro-2-benzofuran-5-yl)ethyl]-2-(4-methyl-5-oxo-2,5-dihydrofuran-3-yl)-2,8-diazaspiro[4.5]decan-1-one

Product 1

HCID 86709529(R)-8-(2-azido-2-(4-methyl-1-oxo-1,3-dihydroisobenzofuran-5-yl)ethyl)-2-(4-methyl-5-oxo-2,5-dihydrofuran-3-yl)-2,8-diazaspiro[4.5]decan-1-one

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
35 °C

Procedure

To a suspension of 8-[(2S)-2-hydroxy-2-(4-methyl-1-oxo-1,3-dihydro-2-benzofuran-5-yl)ethyl]-2-(4-methyl-5-oxo-2,5-dihydrofuran-3-yl)-2,8-diazaspiro[4.5]decan-1-one (Example 8, 500 mg, 1.13 mmol) and diphenylphosphoryl azide (643 mg, 1.36 mmol) in a mixed solvent of toluene and dichloromethane (v:v, 10:1, 11 mL) was added DBU (343 mg, 2.26 mmol). The reaction mixture was stirred at 35° C. for 20 h. The solvent was removed by evaporation and the residue was purified by flash column chromatography (0-100% ethyl acetate in petroleum ether) to afford the title compound. 1H NMR (400 MHz, CDCl3): δ 7.78 (d, J=8.0 Hz, 1H), 7.55 (d, J=8.0 Hz, 1H), 5.26 (s, 2H), 5.23 (s, 2H), 4.99 (dd, J=4.0 Hz, 9.2 Hz, 1H), 4.00 (t, J=6.8 Hz, 2H), 2.95-2.87 (m, 2H), 2.78-2.73 (m, 1H), 2.60-2.57 (m, 1H), 2.48-2.43 (m, 1H), 2.33 (s, 3H), 2.10 (t, J=6.8 Hz, 2H), 2.03-1.86 (m, 6H), 1.51-1.48 (m, 2H); MS-ESI (m/z): 466 (M+1)+.

Workup

  1. customThe solvent was removed by evaporation
  2. customthe residue was purified by flash column chromatography (0-100% ethyl acetate in petroleum ether)

Sources & evidence

ORD record
ord-3f6d811671b84a9c889b950e94dff1b5
Source dataset
uspto-grants-2015_12
Patent number
US09206198B2

Reaction notes

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