2-(Bromomethyl)tetrahydro-2H-pyran → (S)-1'-(pyridin-2-ylmethyl)-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3'-indol]-2'(1'H)-one

HRID 2385237Notes

Reaction equation

HRID 2385237 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].[NH:23]1[C:31]2[C:26](=CC=C[CH:30]=2)[C:25]2(COC3C=C4C(=[CH:42][C:32]2=3)CCO4)C1=O.Br.BrCC1C=CC=CN=1.BrCC1CCCCO1>>[N:23]1[CH:42]=[CH:32][CH:25]=[CH:26][C:31]=1[CH2:30][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]

Participants

5

Reactant 4

HCID 1419172-(Bromomethyl)tetrahydro-2H-pyranHCID 27347202-(Bromomethyl)pyridine hydrobromideHCID 592633545,6-dihydro-2H-spiro[benzofuro[6,5-b]furan-3,3'-indolin]-2'-oneHCID 59352191Spiro[furo[2,3-g]-1,4-benzodioxin-8(7H),3'-[3H]indol]-2'(1'H)-one, 2,3-dihydro-, (3'S)-

Product 1

HCID 59352573(S)-1'-(pyridin-2-ylmethyl)-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 4 and making non-critical variations using (S)-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3′-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 2-(bromomethyl)pyridine hydrobromide to replace 2-(bromomethyl)tetrahydro-2H-pyran, (S)-1′-(pyridin-2-ylmethyl)-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3′-indol]-2′(1′H)-one was obtained (95%) as a colorless solid: mp 144-146° C. (diethyl ether/hexanes); 1H NMR (300 MHz, CDCl3) δ8.59 (dd, J=5.1, 0.6 Hz, 1H), 7.73 (ddd, J=7.8, 7.5, 1.5 Hz, 1H), 7.33-7.27 (m, 2H), 7.22 (ddd, J=7.7, 7.7, 1.3 Hz, 1H), 7.17 (dd, J=7.4, 0.9 Hz, 1H), 7.03 (ddd, J=7.5, 7.5, 0.9 Hz, 1H), 6.95 (d, J=7.8 Hz, 1H), 6.51 (s, 1H), 6.29 (s, 1H), 5.26 (d, J=15.9 Hz, 1H), 5.04 (d, J=15.9 Hz, 1H), 4.96 (d, J=9.0 Hz, 1H), 4.68 (d, J=9.0 Hz, 1H), 4.22-4.18 (m, 2H), 4.15-4.11 (m, 2H); 13C NMR (75 MHz, CDCl3) δ177.7, 155.4, 155.3, 148.6, 144.8, 142.0, 138.4, 138.2, 132.2, 129.0, 124.0, 123.7, 123.3, 122.3, 121.1, 111.8, 109.7, 99.5, 80.3, 64.6, 64.0, 58.2, 45.5; MS (ES+) m/z 387.0 (M+1).

Sources & evidence

ORD record
ord-3a5f4bfb92974b61b93395fd2b8de325
Source dataset
uspto-grants-2012_09
Patent number
US08263606B2

Reaction notes

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