Spiro[furo[2,3-g]-1,4-benzodioxin-8(7H),3'-[3H]indol]-2'(1'H)-one, 2,3-dihydro-, (3'S)- → (R)-1'-pentyl-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3'-indol]-2'(1'H)-one

HRID 1407739Notes

Reaction equation

HRID 1407739 reaction equation
[NH:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[C@:3]2([C:21]3[C:12](=[CH:13][C:14]4[O:19][CH2:18][CH2:17][O:16][C:15]=4[CH:20]=3)[O:11][CH2:10]2)[C:2]1=[O:22].N1C2[C:26](=[CH:27]C=CC=2)[C@@:25]2([C:43]3C(=CC4OCCOC=4[CH:42]=3)OC2)C1=O>>[CH2:27]([N:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[C@:3]2([C:21]3[C:12](=[CH:13][C:14]4[O:19][CH2:18][CH2:17][O:16][C:15]=4[CH:20]=3)[O:11][CH2:10]2)[C:2]1=[O:22])[CH2:26][CH2:25][CH2:43][CH3:42]

Participants

3

Reactant 2

HCID 59352191Spiro[furo[2,3-g]-1,4-benzodioxin-8(7H),3'-[3H]indol]-2'(1'H)-one, 2,3-dihydro-, (3'S)-HCID 59352205Spiro[furo[2,3-g]-1,4-benzodioxin-8(7H),3'-[3H]indol]-2'(1'H)-one, 2,3-dihydro-, (3'R)-

Product 1

HCID 59352496(R)-1'-pentyl-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3'-indol]-2'(1'H)-one

Procedure

Following the procedure as described in EXAMPLE 7.3 and making non-critical variations using (R)-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3′-indol]-2′(1′H)-one to replace (S)-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3′-indol]-2′(1′H)-one, (R)-1′-pentyl-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3′-indol]-2′(1′H)-one was obtained (74%) as a colorless solid: 1H NMR (300 MHz, CDCl3) δ 7.25-7.30 (m, 1H), 7.16-7.11 (m, 1H), 6.99-7.04 (m, 1H), 6.89 (d, J=7.8 Hz, 1H), 6.47 (s, 1H), 6.19 (s, 1H), 4.73 (ABq, 2H), 4.20-4.06 (m, 4H), 3.86-3.59 (m, 2H), 1.82-1.63 (m, 2H), 1.42-1.28 (m, 4H), 0.89 (t, J=6.8 Hz, 3H); 13C NMR (75 MHz, CDCl3) δ177.2, 155.2, 144.5, 142.4, 138.2, 132.5, 128.7, 123.9, 123.0, 121.2, 111.4, 108.5, 99.3, 80.1, 64.5, 63.9, 58.0, 40.3, 29.0, 27.1, 22.3, 14.0; MS (ES+) m/z 366.1 (M+1).

Sources & evidence

ORD record
ord-b051eda1a4d446f38f561df9c82982d1
Source dataset
uspto-grants-2014_12
Patent number
US08916580B2

Reaction notes

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