Dimethyl Sulfoxide → 7-((R)-2-formyl-6-oxo-piperidin-1-yl)-hept-5-ynoic acid methyl ester
Reaction equation
CCN=C=NCCCN(C)C.CS(C)=O.[CH3:16][O:17][C:18](=[O:34])[CH2:19][CH2:20][CH2:21][C:22]#[C:23][CH2:24][N:25]1[C:30](=[O:31])[CH2:29][CH2:28][CH2:27][C@@H:26]1[CH2:32][OH:33].FC(F)(F)C([O-])=O.[NH+]1C=CC=CC=1>C1C=CC=CC=1>[CH3:16][O:17][C:18](=[O:34])[CH2:19][CH2:20][CH2:21][C:22]#[C:23][CH2:24][N:25]1[C:30](=[O:31])[CH2:29][CH2:28][CH2:27][C@@H:26]1[CH:32]=[O:33]Participants
6
Reactant 4
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 0 °C
Procedure
EDCI (127 mg, 0.66 mmol) and DMSO (62 μL, 0.87 mmol) were added sequentially to a solution of 7-((R)-2-hydroxymethyl-6-oxo-piperidin-1-yl)-hept-5-ynoic acid methyl ester (prepared in accordance with Example 29, step 3, 59 mg, 0.22 mmol) in benzene (2.0 mL) at rt. The mixture was cooled to 0° C. and pyridinium trifluoroacetate (47 mg, 0.24 mmol) was added. The reaction was allowed to warm to rt and then was stirred at rt for 2 h. The solution was decanted from the oily residue and the residue was washed with benzene (3×2 mL). The combined benzene phases were concentrated in vacuo to afford crude 7-((R)-2-formyl-6-oxo-piperidin-1-yl)-hept-5-ynoic acid methyl ester that was used without further purification.
Workup
- temperatureto warm to rt
- customThe solution was decanted from the oily residue
- washthe residue was washed with benzene (3×2 mL)
- concentrationThe combined benzene phases were concentrated in vacuo
Sources & evidence
- ORD record
- ord-e667844fc12e40eeb88c918d076b444e
- Source dataset
- uspto-grants-2007_02
- Patent number
- US07179820B2
Reaction notes
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