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2-(Bromomethyl)tetrahydro-2H-pyran → 6-methoxy-1'-[(2R)-tetrahydrofuran-2-ylmethyl]spiro[1-benzofuran-3,3'-indol]-2'(1'H)-one

HRID 2385247
Notes
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Reaction equation

HRID 2385247 reaction equation
[CH3:1][O:2][C:3]1[CH:8]=[CH:7][C:6]2[C:9]3([CH2:19][O:20][C:5]=2[CH:4]=1)[C:17]1[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=1)[NH:11][C:10]3=[O:18].N1C2C(=CC=CC=2)[C:23]2([CH2:33][O:32][C:31]3[CH:34]=C4C(=C[C:30]2=3)CCO4)C1=O.CC1C=CC(S(OC[C@H]2CCCO2)(=O)=O)=CC=1.BrCC1CCCCO1>>[CH3:1][O:2][C:3]1[CH:8]=[CH:7][C:6]2[C:9]3([CH2:19][O:20][C:5]=2[CH:4]=1)[C:17]1[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=1)[N:11]([CH2:34][C@H:31]1[CH2:30][CH2:23][CH2:33][O:32]1)[C:10]3=[O:18]
ParticipantsProcedureSources & evidenceReaction notes

Participants

5

Reactant 4

HCID 1419172-(Bromomethyl)tetrahydro-2H-pyranHCID 7033050(R)-(tetrahydrofuran-2-yl)methyl 4-methylbenzenesulfonateHCID 461940466-methoxyspiro[1-benzofuran-3,3'-indol]-2'(1'H)-oneHCID 592633545,6-dihydro-2H-spiro[benzofuro[6,5-b]furan-3,3'-indolin]-2'-one

Product 1

HCID 593527626-methoxy-1'-[(2R)-tetrahydrofuran-2-ylmethyl]spiro[1-benzofuran-3,3'-indol]-2'(1'H)-one

Procedure

Following the procedure as described in EXAMPLE 4 and making non-critical variations using 6-methoxyspiro[1-benzofuran-3,3′-indol]-2′(1′H)-one to replace 5,6-dihydrospiro[benzo[1,2-b:5,4-b′]difuran-3,3′-indol]-2′(1′H)-one, and (R)-(tetrahydrofuran-2-yl)methyl 4-methylbenzenesulfonate to replace 2-(bromomethyl)tetrahydro-2H-pyran, 6-methoxy-1′-[(2R)-tetrahydrofuran-2-ylmethyl]spiro[1-benzofuran-3,3′-indol]-2′(1′H)-one was obtained (54%) as a colorless liquid: 1H NMR (300 MHz, CDCl3) (diastereomers) δ7.32-7.25 (m, 1H), 7.16-6.99 (m, 3H), 6.61 (d, J=8.1 Hz, 1H), 6.52 (d, J=2.1 Hz, 1H), 6.36 (dd, J=8.1, 2.1 Hz, 1H), 4.94 (d, J=9.0 Hz, 1H), 4.69 (d, J=9.0 Hz, 1H), 4.32-4.22 (m, 1H), 4.00-3.66 (m, 4H), 3.77 (s, 3H), 2.10-1.66 (m, 4H); 13C NMR (75 MHz, CDCl3) (diastereomers) δ178.0, 177.9, 162.0, 161.4, 142.9, 142.8, 132.4, 132.3, 128.7, 128.6, 123.6, 123.5 (2C), 123.4, 123.2, 121.0, 120.9, 109.6, 109.3, 107.4 (2C), 96.5, 80.5, 80.4, 76.8, 76.7, 68.2, 68.1, 57.5, 55.5, 44.5 (2C), 29.2, 28.9, 25.6, 25.5; MS (ES+) m/z 352.1 (M+1).

Sources & evidence

ORD record
ord-7af94cc909914395b8e439c29aaddd2d
Source dataset
uspto-grants-2012_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08263606B2

Reaction notes

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