Tert-butyl(4-chloro-2-ethynylphenoxy)acetate → Tert-butyl(4-chloro-2-{[2-isopropyl-5-(methylsulfonyl)phenyl]ethynyl}phenoxy)acetate
Reaction equation
[C:1]([O:5][C:6](=[O:18])[CH2:7][O:8][C:9]1[CH:14]=[CH:13][C:12]([Cl:15])=[CH:11][C:10]=1[C:16]#[CH:17])([CH3:4])([CH3:3])[CH3:2].I[C:20]1[CH:25]=[C:24]([S:26]([CH3:29])(=[O:28])=[O:27])[CH:23]=[CH:22][C:21]=1[CH:30]([CH3:32])[CH3:31]>>[C:1]([O:5][C:6](=[O:18])[CH2:7][O:8][C:9]1[CH:14]=[CH:13][C:12]([Cl:15])=[CH:11][C:10]=1[C:16]#[C:17][C:22]1[CH:23]=[C:24]([S:26]([CH3:29])(=[O:27])=[O:28])[CH:25]=[CH:20][C:21]=1[CH:30]([CH3:32])[CH3:31])([CH3:4])([CH3:3])[CH3:2]Participants
3
Procedure
Following the general method as outlined in Intermediate 79, starting from (4-chloro-2-ethynyl-phenoxy)-acetic acid tert-butyl ester (Intermediate 3) and 2-iodo-1-isopropyl-4-(methylsulfonyl)benzene (Intermediate 91), the title compound was obtained as a brown sticky solid after purification by flash column chromatography (silica), eluting with cyclohexane containing increasing amounts of EtOAc.
Sources & evidence
- ORD record
- ord-80264697248940df8da0bd0cfaf5db2c
- Source dataset
- uspto-grants-2012_09
- Patent number
- US08273769B2
Reaction notes
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