Dimethylcarbamoyl Chloride → Trifluoroacetic acid

HRID 713302Notes

Reaction equation

HRID 713302 reaction equation
[OH:1][C:2]([C:4]([F:7])([F:6])[F:5])=[O:3].[F:8][CH:9]([F:37])[CH2:10][NH:11][C:12]1[N:13]=[C:14]2[CH2:36][CH2:35][NH:34][CH2:33][C:15]2=[N:16][C:17]=1[N:18]1[CH2:23][CH2:22][CH:21]([O:24][C:25]2[CH:30]=[CH:29][C:28]([F:31])=[CH:27][C:26]=2[F:32])[CH2:20][CH2:19]1.[CH3:38][N:39]([CH3:43])[C:40](Cl)=[O:41].CCN(C(C)C)C(C)C>C(Cl)Cl.CN(C=O)C>[F:37][CH:9]([F:8])[CH2:10][NH:11][C:12]1[N:13]=[C:14]2[CH2:36][CH2:35][N:34]([C:40]([N:39]([CH3:43])[CH3:38])=[O:41])[CH2:33][C:15]2=[N:16][C:17]=1[N:18]1[CH2:19][CH2:20][CH:21]([O:24][C:25]2[CH:30]=[CH:29][C:28]([F:31])=[CH:27][C:26]=2[F:32])[CH2:22][CH2:23]1.[C:2]([OH:3])([C:4]([F:7])([F:6])[F:5])=[O:1]

Participants

7

Reactant 3

HCID 6598Dimethylcarbamoyl ChlorideHCID 81531DiisopropylethylamineHCID 131734031N-(2,2-difluoroethyl)-3-(4-(2,4-difluorophenoxy)piperidin-1-yl)-5,6,7,8-tetrahydropyrido[3,4-b]pyrazin-2-amine TFA salt

Product 2

HCID 6422Trifluoroacetic acidYield 219.3%HCID 118159362HCID 118159362, compound

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 6344DichloromethaneSolvent

Procedure

A solution of N-(2,2-difluoroethyl)-3-(4-(2,4-difluorophenoxyl)piperidin-1-yl)-5,6,7,8-tetrahydropyrido[3,4-b]pyrazin-2-amine TFA salt (15 mg, 0.028 mmol) in DCM (278 μL) at room temperature was treated with dimethylcarbamic chloride (3.0 mg, 0.028 mmol) and DIPEA (4.9 μL, 0.028 mmol), and the resulting reaction mixture was stirred overnight. The crude reaction mixture was diluted in DMF, filtered through a hydrophilic PTFE 0.45 nm filter (Millipore® Millex-LCR), and purified via HPLC Method A to give the title compound as a TFA salt (7 mg) as a white solid. 1H NMR (400 MHz, methanol-d4) 6 ppm 1.92-2.02 (m, 2H), 2.09-2.18 (m, 2H), 2.81-2.86 (m, 2H), 2.90 (s, 6H), 2.96-3.04 (m, 2H), 3.34-3.42 (m, 2H), 3.54 (t, J=5.9 Hz, 2H), 3.74-3.84 (m, 2H), 4.28 (s, 2H), 4.46 (tt, J=7.7, 3.9 Hz, 1H), 5.90-6.22 (m, 1H), 6.88 (dddd, J=9.1, 8.1, 3.2, 1.9 Hz, 1H), 6.99 (ddd, J=11.4, 8.6, 3.0 Hz, 1H), 7.18 (td, J=9.2, 5.6 Hz, 1H); ESI-MS m/z [M+H]+ 497.4.

Workup

  1. customthe resulting reaction mixture
  2. customThe crude reaction mixture
  3. filtrationfiltered through a hydrophilic PTFE 0.45 nm
  4. filtrationfilter (Millipore® Millex-LCR)
  5. custompurified via HPLC Method A

Sources & evidence

ORD record
ord-e8f6de64a7c5423ab6dbd69585696eb0
Source dataset
uspto-grants-2015_11
Patent number
US09181249B2

Reaction notes

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