4-Bromo-2-fluorobenzonitrile → 4-(4-Cyano-3-fluoro-phenoxy)-2,2-dimethyl-2,3-dihydro-benzofuran-6-carboxylic acid methyl ester
Reaction equation
[CH3:1][O:2][C:3]([C:5]1[CH:15]=[C:14]([O:16]C2C=NC(C(=O)N(C)C)=CC=2)[C:8]2[CH2:9][C:10]([CH3:13])([CH3:12])[O:11][C:7]=2[CH:6]=1)=[O:4].Br[C:29]1[CH:36]=[CH:35][C:32]([C:33]#[N:34])=[C:31]([F:37])[CH:30]=1.COC(C1C=C(O)C2CC(C)(C)OC=2C=1)=O>>[CH3:1][O:2][C:3]([C:5]1[CH:15]=[C:14]([O:16][C:29]2[CH:36]=[CH:35][C:32]([C:33]#[N:34])=[C:31]([F:37])[CH:30]=2)[C:8]2[CH2:9][C:10]([CH3:13])([CH3:12])[O:11][C:7]=2[CH:6]=1)=[O:4]Participants
4
Reactant 3
Product 1
Procedure
The title compound was prepared in a similar manner as described for Intermediate 161b, from 4-bromo-2-fluoro-benzonitrile (270 mg, 1.35 mmol) and 4-hydroxy-2,2-dimethyl-2,3-dihydro-benzofuran-6-carboxylic acid methyl ester (3e) (300 mg, 1.35 mmol) to give a white foam (336 mg, 73% yield). 1H NMR (400 MHz, CDCl3) δ 7.57 (dd, J=8.84, 7.33 Hz, 1 H) 7.28 (s, 1 H) 7.24 (d, J=1.26 Hz, 1 H) 6.81 (dd, J=8.34, 2.02 Hz, 1 H) 6.75 (dd, J=10.23, 2.40 Hz, 1 H) 3.88 (s, 3 H) 2.87 (s, 2 H) 1.48 (s, 6 H); LCMS for C19H16FNO4 m/z 342.00 (M+H+).
Sources & evidence
- ORD record
- ord-3298425369da46138d36fb4e53c6b121
- Source dataset
- uspto-grants-2010_11
- Patent number
- US07842713B2
Reaction notes
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