Methanol → Methyl 13-phenyltridecanoate
Reaction equation
[C:1]1([CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][C:19]([OH:21])=[O:20])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.S(=O)(=O)(O)O.[CH3:27]O>>[C:1]1([CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][C:19]([O:21][CH3:27])=[O:20])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1Participants
4
Procedure
13-Phenyltridecanoic acid (22.4 g, 77 mmol) was reacted for 1 h in methanol (60 ml) and sulfuric acid (2.2 g) under reflux. The reaction mixture was concentrated, poured into H2O (100 ml) and extracted with dichloromethane. The organic layer was washed with H2O, dried over anhydrous MgSO4 and evaporated under reduced pressure. The residue (33 g) was chromatographed on silica gel (Wako Gel C-200) with dichloromethane as eluent to give the title compound as a white solid; yield: 17.6 g; mp 30.5°-31.5° C.
Workup
- concentrationThe reaction mixture was concentrated
- additionpoured into H2O (100 ml)
- extractionextracted with dichloromethane
- washThe organic layer was washed with H2O
- dry with materialdried over anhydrous MgSO4
- customevaporated under reduced pressure
- customThe residue (33 g) was chromatographed on silica gel (Wako Gel C-200) with dichloromethane as eluent
Sources & evidence
- ORD record
- ord-877c3010943d4783b2b0bec6f782f6eb
- Source dataset
- uspto-grants-1993_10
- Patent number
- US05250669
Reaction notes
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