3-Pyridinylboronic acid → 4'-pyridin-3-yl-1'-(pyridin-2-ylmethyl)-5,6-dihydrospiro[benzo[1,2-b:5,4-b']difuran-3,3'-indol]-2'(1'H)-one
Reaction equation
Br[C:2]1[CH:10]=[CH:9][CH:8]=[C:7]2[C:3]=1[C:4]1([CH2:22][O:21][C:20]3[CH:23]=[C:24]4[C:28](=[CH:29][C:19]1=3)[CH2:27][CH2:26][O:25]4)[C:5](=[O:18])[N:6]2[CH2:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][N:13]=1.BrC1C=CC=C2C=1C1(C3=CC4OCOC=4C=C3OC1)C(=O)[N:35]2[CH2:40][CH2:41][CH2:42][CH2:43][CH3:44].N1C=CC=C(B(O)O)C=1.CN(C)C1N=CC(B(O)O)=CC=1>>[N:35]1[CH:40]=[CH:41][CH:42]=[C:43]([C:2]2[CH:10]=[CH:9][CH:8]=[C:7]3[C:3]=2[C:4]2([CH2:22][O:21][C:20]4[CH:23]=[C:24]5[C:28](=[CH:29][C:19]2=4)[CH2:27][CH2:26][O:25]5)[C:5](=[O:18])[N:6]3[CH2:11][C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][N:13]=2)[CH:44]=1Participants
5
Reactant 4
Product 1
Procedure
Following the procedure as described in EXAMPLE 4, and making non-critical variations using 4′-bromo-1′-(pyridin-2-ylmethyl)-5,6-dihydrospiro[benzo[1,2-b:5,4-b′]difuran-3,3′-indol]-2′(1′H)-one to replace 4′-bromo-1′-pentylspiro[furo[2,3-f][1,3]benzodioxole-7,3′-indol]-2′(1′H)-one, and pyridin-3-ylboronic acid to replace [6-(dimethylamino)pyridin-3-yl]boronic acid, the title compound was obtained (9%) as a colorless solid: mp>200° C.; 1H NMR (300 MHz, DMSO-d6) δ 8.52 (d, 1H), 8.42 (d, 1H), 7.96 (s, 1H), 7.79 (t, 1H), 7.40 (d, 1H), 7.29 (t, 2H), 7.18-7.08 (m, 2H), 7.00 (d, 1H), 6.81 (d, 1H), 6.72 (s, 1H), 5.98 (s, 1H), 5.08 (ABq, 2H), 4.56-4.40 (m, 4H), 3.10-2.90 (m, 2H); MS (ES+) m/z 448.5 (M+1).
Sources & evidence
- ORD record
- ord-fc20194e0f4a4e87928b319536c64dea
- Source dataset
- uspto-grants-2012_01
- Patent number
- US08106087B2
Reaction notes
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