Ammonia → 2-(4-((2S)-2-(aminomethyl)-4-(2-thiophenylsulfonyl)-1-piperazinyl)phenyl)-1,1,1-trifluoro-2-propanol

HRID 1972623Notes

Reaction equation

CS(O[CH2:6][C@H:7]1[CH2:12][N:11]([S:13]([C:16]2[S:17][CH:18]=[CH:19][CH:20]=2)(=[O:15])=[O:14])[CH2:10][CH2:9][N:8]1[C:21]1[CH:26]=[CH:25][C:24]([C:27]([OH:33])([CH3:32])[C:28]([F:31])([F:30])[F:29])=[CH:23][CH:22]=1)(=O)=O.CO.[NH3:36]>>[NH2:36][CH2:6][C@H:7]1[CH2:12][N:11]([S:13]([C:16]2[S:17][CH:18]=[CH:19][CH:20]=2)(=[O:15])=[O:14])[CH2:10][CH2:9][N:8]1[C:21]1[CH:26]=[CH:25][C:24]([C:27]([OH:33])([CH3:32])[C:28]([F:30])([F:31])[F:29])=[CH:23][CH:22]=1

Participants

Reactant 3

HCID 222Ammonia

HCID 887Methanol

HCID 86670301((2R)-4-(2-thiophenylsulfonyl)-1-(4-(2,2,2-trifluoro-1-hydroxy-1-methylethyl)phenyl)-2-piperazinyl)methyl methanesulfonate2×

Product 1

HCID 665825602-(4-((2S)-2-(aminomethyl)-4-(2-thiophenylsulfonyl)-1-piperazinyl)phenyl)-1,1,1-trifluoro-2-propanol

Conditions

Temperature: 140 °C

Procedure

A mixture of ((2R)-4-(thiophen-2-ylsulfonyl)-1-(4-(1,1,1-trifluoro-2-hydroxypropan-2-yl)phenyl)piperazin-2-yl)methyl methanesulfonate (0.9 g, 1.70 mmol, Intermediate B) in 2 M NH3 in MeOH (10 mL, 20.0 mmol) was heated in an Initiator microwave reactor (Biotage AB, Inc., Uppsala, Sweden) at 140° C. for 30 min. The mixture was concentrated and purified on silica gel [2% MeOH in CH2Cl2 to 2% (2 N NH3-MeOH) in CH2Cl2) to give 2-(4-((2S)-2-(aminomethyl)-4-(2-thiophenylsulfonyl)-1-piperazinyl)phenyl)-1,1,1-trifluoro-2-propanol as a white foam (500 mg).

Workup

concentrationThe mixture was concentrated
custompurified on silica gel [2% MeOH in CH2Cl2 to 2% (2 N NH3-MeOH) in CH2Cl2)

Sources & evidence

ORD record: ord-56a0e97aeb8e436c9513111144cc601f
Source dataset: uspto-grants-2013_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08431563B2

Reaction notes

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