Trifluoroacetic acid → Trifluoroacetic acid

HRID 41639

Reaction equation

C(OC([N:8]1[CH2:13][CH2:12][CH:11]([C:14]2[CH:18]=[CH:17][O:16][C:15]=2[CH2:19]OS(C2C=CC(C)=CC=2)(=O)=O)[CH2:10][CH2:9]1)=O)(C)(C)C.C(=O)([O-])[O-].[K+].[K+].[Cl:37][C:38]1[CH:39]=C(O)C=[CH:42][CH:43]=1.[C:45]([OH:51])([C:47]([F:50])([F:49])[F:48])=[O:46]>CC#N>[Cl:37][C:38]1[CH:39]=[C:15]([CH:19]=[CH:42][CH:43]=1)[O:16][CH2:17][C:18]1[CH:47]=[CH:45][O:46][C:14]=1[CH:11]1[CH2:10][CH2:9][NH:8][CH2:13][CH2:12]1.[C:45]([OH:51])([C:47]([F:50])([F:49])[F:48])=[O:46]

Participants

Conditions

Temperature: 50 °C

Procedure

4-[2-(Toluene-4-sulfonyloxymethyl)furan-3-yl]piperidine-1-carboxylic acid t-butyl ester (65 mg, 0.15 mmol was dissolved in MeCN (770 μL) and added to a mixture of potassium carbonate (32 mg, 230 mmol, 1.6 eq.) and 3-chlorophenol (28.8 mg, 224 μmol, 1.5 eq.). The resulting mixture was shaken at 50° C. overnight. The mixture was then cooled and the solids removed. The supernatant was combined with TFA (12 μL, 160 mmol, 1.0 eq.) and the resulting mixture was shaken overnight at room temperature. The solution was concentrated using an evaporator, then dissolved in 1:1 AcOH:H2O (5.0 mL) then an additional 2.0 ml AcOH, filtered, and purified by preparative HPLC to yield the title compound as a TFA salt (4.3 mg, 98% purity). MS m/z: [M+H]+ calcd for C16H18ClNO2, 292.10. found 292.0.

Workup

temperatureThe mixture was then cooled
customthe solids removed
stirringthe resulting mixture was shaken overnight at room temperature
concentrationThe solution was concentrated
customan evaporator
dissolutiondissolved in 1:1 AcOH
filtrationH2O (5.0 mL) then an additional 2.0 ml AcOH, filtered
custompurified by preparative HPLC

Sources & evidence

ORD record: ord-7c7eb893515043ada633d52917cc2209
Source dataset: uspto-grants-2013_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08530663B2

Linked notes

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