2-(Bromomethyl)tetrahydro-2H-pyran → 7'-(trifluoromethyl)-1'-{[5-(trifluoromethyl)-2-furyl]methyl}spiro[furo[2,3-f][1,3]benzodioxole-7,3'-indol]-2'(1'H)-one

Reaction equation

Br[CH2:2][C:3]1[O:7][C:6]([C:8]([F:11])([F:10])[F:9])=[CH:5][CH:4]=1.BrCC1CCCCO1.[F:20][C:21]([F:44])([F:43])[C:22]1[CH:23]=[CH:24][CH:25]=[C:26]2[C:30]=1[NH:29][C:28](=[O:31])[C:27]12[C:35]2=[CH:36][C:37]3[O:41][CH2:40][O:39][C:38]=3[CH:42]=[C:34]2[O:33][CH2:32]1>>[F:44][C:21]([F:20])([F:43])[C:22]1[CH:23]=[CH:24][CH:25]=[C:26]2[C:30]=1[N:29]([CH2:2][C:3]1[O:7][C:6]([C:8]([F:11])([F:10])[F:9])=[CH:5][CH:4]=1)[C:28](=[O:31])[C:27]12[C:35]2=[CH:36][C:37]3[O:41][CH2:40][O:39][C:38]=3[CH:42]=[C:34]2[O:33][CH2:32]1

Participants

Reactant 3

HCID 1419172-(Bromomethyl)tetrahydro-2H-pyran

HCID 27946052-(Bromomethyl)-5-(trifluoromethyl)furan

HCID 685972007'-(trifluoromethyl)spiro[furo[2,3-f][1,3]benzodioxole-7,3'-indol]-2'(1'H)-one

Product 1

HCID 593525167'-(trifluoromethyl)-1'-{[5-(trifluoromethyl)-2-furyl]methyl}spiro[furo[2,3-f][1,3]benzodioxole-7,3'-indol]-2'(1'H)-one

Procedure

Following the procedure as described in EXAMPLE 4 and making non-critical variations using 5-bromomethyl-2-(trifluoromethyl)furan to replace 2-(bromomethyl)tetrahydro-2H-pyran, and 7′-(trifluoromethyl)spiro[furo[2,3-f][1,3]benzodioxole-7,3′-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, 7′-(trifluoromethyl)-1′-{[5-(trifluoromethyl)-2-furyl]methyl}spiro[furo[2,3-f][1,3]benzodioxole-7,3′-indol]-2′(1′H)-one was obtained (43%) as a colorless solid: mp 95-98° C.; 1H NMR (300 MHz, CDCl3) δ7.59 (d, J=8.1 Hz, 1H), 7.36 (d, J=7.3 Hz, 1H), 7.15 (dd, J=7.8, 7.8 Hz, 1H), 6.69 (d, J=3.2 Hz, 1H), 6.50 (s, 1H), 6.23 (d, J=3.0 Hz, 1H), 6.10 (s, 1H), 5.86 (d, J=3.0 Hz, 2H), 5.23 (ABq, 2H), 4.78 (ABq, 2H); 13C NMR (75 MHz, CDCl3) δ178.6, 156.0, 152.2, 149.3, 142.7, 141.4 (q), 139.1, 135.1, 127.9, 127.0 (m), 122.9 (d), 121.1 (d), 119.3 (d), 118.7, 113.4 (q), 112.5, 108.2, 102.8, 101.7, 93.7, 80.8, 56.9, 39.4; MS (ES+) m/z 498.4 (M+1).