Boron trifluoride etherate → 3-(Tetrahydropyran-2-ylthio)-2-methylpropanoic acid
Reaction equation
[SH:1][CH2:2][CH:3]([CH3:7])[C:4]([OH:6])=[O:5].[O:8]1[CH:13]=[CH:12][CH2:11][CH2:10][CH2:9]1.B(F)(F)F.CCOCC.C(=O)([O-])[O-].[K+].[K+]>C1C=CC=CC=1>[O:8]1[CH2:13][CH2:12][CH2:11][CH2:10][CH:9]1[S:1][CH2:2][CH:3]([CH3:7])[C:4]([OH:6])=[O:5]Participants
6
Procedure
To a solution of 3-mercapto-2-methylpropanoic acid (2.4 g.) and freshly distilled 2,3-dihydro-4H-pyrane (1.9 g.) in benzene (60 ml.), boron trifluoride etherate (2.8 g.) is added. After two hours, potassium carbonate (4 g.) is added, the mixture is stirred and filtered. The filtrate is concentrated to dryness to yield 3-(tetrahydropyran-2-ylthio)-2-methylpropanoic acid.
Workup
- filtrationfiltered
- concentrationThe filtrate is concentrated to dryness
Sources & evidence
- ORD record
- ord-10307668966946388033a050c144c49e
- Source dataset
- uspto-grants-1979_05
- Patent number
- US04154840
Reaction notes
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