2-(Bromomethyl)tetrahydro-2H-pyran → HCID 59352424, compound

HRID 2385231Notes

Reaction equation

HRID 2385231 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].N1C2C(=CC=CC=2)[C:25]2([CH2:35][O:34][C:33]3[CH:36]=C4C(=C[C:32]2=3)CCO4)C1=O.CC1C=CC(S(OC[C@H]2CCCO2)(=O)=O)=CC=1.BrCC1CCCCO1>>[O:34]1[CH2:35][CH2:25][CH2:32][C@@H:33]1[CH2:36][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 7033050(R)-(tetrahydrofuran-2-yl)methyl 4-methylbenzenesulfonateHCID 58224164Spiro[furo[2,3-g]-1,4-benzodioxin-8(7H),3'-[3H]indol]-2'(1'H)-one, 2,3-dihydroHCID 592633545,6-dihydro-2H-spiro[benzofuro[6,5-b]furan-3,3'-indolin]-2'-one

Product 1

HCID 59352424HCID 59352424, compound

Procedure

Following the procedure as described in EXAMPLE 4 and making non-critical variations using 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 (R)-(tetrahydrofuran-2-yl)methyl 4-methylbenzenesulfonate to replace 2-(bromomethyl)tetrahydro-2H-pyran, 1′-[(2R)-tetrahydrofuran-2-ylmethyl]-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3′-indol]-2′(1′H)-one was obtained (55%) as a colorless solid: mp 174-176° C. (hexanes); 1H NMR (300 MHz, CDCl3) (diastereomers) δ7.32-7.25 (m, 1H), 7.16-7.00 (m, 3H), 6.49 (s, 1H), 6.24 (s, 1H), 4.88 (d, J=8.7 Hz, 1H), 4.63 (d, J=8.7 Hz, 1H), 4.31-4.22 (m, 1H), 4.21-4.17 (m, 2H), 4.14-4.09 (m, 2H), 3.99-3.67 (m, 4H), 2.09-1.82 (m, 3H), 1.78-1.66 (m, 1H); 13C NMR (75 MHz, CDCl3) (diastereomers) δ178.1, 177.9, 155.3, 144.6, 143.0, 142.9, 138.4, 132.4, 132.3, 128.9, 128.8, 123.8, 123.7, 123.3, 121.4, 121.3, 111.7, 111.6, 109.8, 109.5, 99.4, 80.29, 80.26, 77.1, 76.8, 68.4, 68.3, 64.6, 64.0, 58.10, 58.08, 44.7, 29.4, 29.1, 25.9, 25.7; MS (ES+) m/z 380.2 (M+1).

Sources & evidence

ORD record
ord-85469a3d52a34d89afb9722f766c8c92
Source dataset
uspto-grants-2012_09
Patent number
US08263606B2

Reaction notes

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