Tert-butyl(4-cyano-2-ethynylphenoxy)acetate → Tert-butyl(2-{[2-chloro-5-(methylsulfonyl)phenyl]ethynyl}-4-cyanophenoxy)acetate
Reaction equation
[C:1]([O:5][C:6](=[O:19])[CH2:7][O:8][C:9]1[CH:14]=[CH:13][C:12]([C:15]#[N:16])=[CH:11][C:10]=1[C:17]#[CH:18])([CH3:4])([CH3:3])[CH3:2].[Cl:20][C:21]1[CH:26]=[CH:25][C:24]([S:27]([CH3:30])(=[O:29])=[O:28])=[CH:23][C:22]=1I>>[C:1]([O:5][C:6](=[O:19])[CH2:7][O:8][C:9]1[CH:14]=[CH:13][C:12]([C:15]#[N:16])=[CH:11][C:10]=1[C:17]#[C:18][C:22]1[CH:23]=[C:24]([S:27]([CH3:30])(=[O:28])=[O:29])[CH:25]=[CH:26][C:21]=1[Cl:20])([CH3:4])([CH3:3])[CH3:2]Participants
3
Procedure
Following the general method as outlined in Intermediate 79, starting from (4-cyano-2-ethynyl-phenoxy)-acetic acid tert-butyl ester (Intermediate 46) and 1-chloro-2-iodo-4-(methylsulfonyl)benzene (Intermediate 74), the title compound was obtained as a yellow solid in 74% yield after purification by flash column chromatography (silica), eluting with cyclohexane containing increasing amounts of EtOAc.
Sources & evidence
- ORD record
- ord-badf037912624951848f6c0819d9aa1a
- Source dataset
- uspto-grants-2012_09
- Patent number
- US08273769B2
Reaction notes
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