Furan-3-boronic acid → 4'-(3-furyl)-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=1[C:33]1([C:49]3=CC4OCOC=4C=[C:48]3[O:47][CH2:46]1)C(=O)N2CCCCC.O1C=CC(B(O)O)=C1.CN(C)C1N=CC(B(O)O)=CC=1>>[O:47]1[CH:48]=[CH:49][C:33]([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:46]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 3-furanboronic acid to replace [6-(dimethylamino)pyridin-3-yl]boronic acid, the title compound was obtained (75%) as a colorless solid: mp 195-197° C.; 1H NMR (300 MHz, CDCl3) δ 8.58 (d, 1H), 7.68 (t, 1H), 7.32-7.21 (m, 4H), 6.97 (d, 1H), 6.92 (d, 1H), 6.77 (s, 1H), 6.60 (s, 1H), 6.35 (s, 1H), 5.99 (s, 1H), 5.12 (ABq, 2H), 4.71 (ABq, 2H), 4.57 (t, 2H), 3.03 (t, 2H); MS (ES+) m/z 437.4 (M+1).
Sources & evidence
- ORD record
- ord-47e47a3cf38b4a1790bccfe6ebe5644c
- Source dataset
- uspto-grants-2010_04
- Patent number
- US07700641B2
Reaction notes
Loading…