1-(Chloromethyl)-2-(trifluoromethyl)benzene → 1'-[2-(trifluoromethyl)benzyl]-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3'-indol]-2'(1'H)-one
Reaction equation
Cl[CH2:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[C:9]([F:12])([F:11])[F:10].BrCC1CCCCO1.[NH:21]1[C:29]2[C:24](=[CH:25][CH:26]=[CH:27][CH:28]=2)[C:23]2([C:41]3[C:32](=[CH:33][C:34]4[O:39][CH2:38][CH2:37][O:36][C:35]=4[CH:40]=3)[O:31][CH2:30]2)[C:22]1=[O:42]>>[F:10][C:9]([F:12])([F:11])[C:4]1[CH:5]=[CH:6][CH:7]=[CH:8][C:3]=1[CH2:2][N:21]1[C:29]2[C:24](=[CH:25][CH:26]=[CH:27][CH:28]=2)[C:23]2([C:41]3[C:32](=[CH:33][C:34]4[O:39][CH2:38][CH2:37][O:36][C:35]=4[CH:40]=3)[O:31][CH2:30]2)[C:22]1=[O:42]Participants
Reactant 3
Product 1
Procedure
Following the procedure as described in EXAMPLE 4 and making non-critical variations using 1-(chloromethyl)-2-(trifluoromethyl)benzene to replace 2-(bromomethyl)tetrahydro-2H-pyran, and 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, 1′-[2-(trifluoromethyl)benzyl]-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 207-208° C. (dichloromethane/diethyl ether); 1H NMR (300 MHz, CDCl3) 7.72 (d, J=7.6 Hz, 1H), 7.51-7.42 (m, 2H), 7.42-7.34 (m, 3H), 7.22-7.12 (m, 1H), 7.07-7.00 (m, 1H), 6.61 (d, J=7.7 Hz, 1H), 6.52 (s, 1H), 6.31 (s, 1H), 5.26 (d, J=17.1 Hz, 1H), 5.07 (d, J=17.0 Hz, 1H), 4.97 (d, J=8.9 Hz, 1H), 4.70 (d, J=8.9 Hz, 1H), 4.24-4.09 (m, 4H); 13C NMR (75 MHz, CDCl3) δ 177.9, 155.4, 144.8, 141.8, 138.4, 133.9, 132.5, 132.1, 129.0, 128.3 (q, J=30.8 Hz), 127.7, 126.8, 126.4 (q, J=5.8 Hz), 124.4 (q, J=273.7 Hz), 124.1, 123.8, 120.8, 111.5, 109.2, 99.5, 80.3, 64.5, 63.9, 58.2, 40.6; MS (ES+) m/z 454.1 (M+1).
Sources & evidence
- ORD record
- ord-f7406567ae7749aab7a18574cf2ec3e3
- Source dataset
- uspto-grants-2012_09
- Patent number
- US08263606B2
Reaction notes
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