2-(Bromomethyl)tetrahydro-2H-pyran → HCID 46195708, compound
Reaction equation
[CH3:1][N:2]1[C:6]2[CH:7]=[C:8]3[C:13]4([C:21]5[C:16](=[CH:17][CH:18]=[CH:19][CH:20]=5)[NH:15][C:14]4=[O:22])[CH2:12][O:11][C:9]3=[CH:10][C:5]=2[O:4][C:3]1=[O:23].CC1C=CC(S(O[CH2:35][C@H:36]2[CH2:40][CH2:39][CH2:38][O:37]2)(=O)=O)=CC=1.BrCC1CCCCO1>>[CH3:1][N:2]1[C:6]2[CH:7]=[C:8]3[C:13]4([C:21]5[C:16](=[CH:17][CH:18]=[CH:19][CH:20]=5)[N:15]([CH2:35][C@H:36]5[CH2:40][CH2:39][CH2:38][O:37]5)[C:14]4=[O:22])[CH2:12][O:11][C:9]3=[CH:10][C:5]=2[O:4][C:3]1=[O:23]Participants
Procedure
Following the procedure as described in EXAMPLE 4 and making non-critical variations using 1-methylspiro[furo[3,2-f][1,3]benzoxazole-7,3′-indole]-2,2′(1H,1′H)-dione 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-methyl-1′-[(2R)-tetrahydrofuran-2-ylmethyl]spiro[furo[3,2-f][1,3]benzoxazole-7,3′-indole]-2,2′(1H,1′H)-dione was obtained (32%) as a colorless solid: mp>250° C. (toluene/hexanes); 1H NMR (300 MHz, CDCl3) δ 7.38-7.29 (m, 1H), 7.17-7.03 (m, 3H), 6.90-6.85 (m, 1H), 6.40-6.28 (m, 1H), 4.99-4.92 (m, 1H), 4.75-4.67 (m, 1H), 4.36-4.25 (m, 1H), 4.01-3.67 (m, 4H), 3.25-3.21 (m, 3H), 2.14-1.85 (m, 3H), 1.79-1.65 (m, 1H); 13C NMR (75 MHz, CDCl3) δ177.6, 157.0, 156.9, 155.0, 143.5 (2C), 143.1, 142.6, 132.2, 131.9, 129.3, 129.2, 126.2, 124.1, 123.8, 123.6, 109.8, 109.8, 103.1, 103.0, 94.7 (2C), 80.5, 80.4, 77.1, 76.3, 68.4, 68.2, 58.2 (2C), 45.0, 44.7, 29.3, 29.2, 28.3, 28.2, 25.7; MS (ES+) m/z 393.0 (M+1).
Sources & evidence
- ORD record
- ord-00198364e52148ff8c4f53d9ac6686f9
- Source dataset
- uspto-grants-2014_12
- Patent number
- US08916580B2
Reaction notes
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