Dimethylcarbamoyl Chloride → Trifluoroacetic acid

HRID 713305Notes

Reaction equation

HRID 713305 reaction equation
[OH:1][C:2]([C:4]([F:7])([F:6])[F:5])=[O:3].[F:8][C:9]1[CH:36]=[C:35]([F:37])[CH:34]=[CH:33][C:10]=1[O:11][CH:12]1[CH2:17][CH2:16][N:15]([C:18]2[N:19]=[C:20]3[CH2:31][CH2:30][NH:29][CH:28]([CH3:32])[C:21]3=[N:22][C:23]=2[NH:24][CH:25]([CH3:27])[CH3:26])[CH2:14][CH2:13]1.[CH3:38][N:39]([CH3:43])[C:40](Cl)=[O:41].CCN(C(C)C)C(C)C>C(Cl)Cl>[F:8][C:9]1[CH:36]=[C:35]([F:37])[CH:34]=[CH:33][C:10]=1[O:11][CH:12]1[CH2:13][CH2:14][N:15]([C:18]2[N:19]=[C:20]3[CH2:31][CH2:30][N:29]([C:40]([N:39]([CH3:43])[CH3:38])=[O:41])[CH:28]([CH3:32])[C:21]3=[N:22][C:23]=2[NH:24][CH:25]([CH3:27])[CH3:26])[CH2:16][CH2:17]1.[C:2]([OH:3])([C:4]([F:7])([F:6])[F:5])=[O:1]

Participants

6

Reactant 3

HCID 6598Dimethylcarbamoyl ChlorideHCID 81531DiisopropylethylamineHCID 1317340322-(4-(2,4-difluorophenoxy)piperidin-1-yl)-N-isopropyl-5-methyl-5,6,7,8-tetrahydropyrido[3,4-b]pyrazin-3-amine TFA salt

Product 2

HCID 6422Trifluoroacetic acidYield 191.1%HCID 1181593832-(4-(2,4-difluorophenoxy)piperidin-1-yl)-3-(isopropylamino)-N,N,5-trimethyl-7,8-dihydropyrido[3,4-b]pyrazine-6(5H)-carboxamide

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A solution of 2-(4-(2,4-difluorophenoxyl)piperidin-1-yl)-N-isopropyl-5-methyl-5,6,7,8-tetrahydropyrido[3,4-b]pyrazin-3-amine TFA salt (15 mg, 0.028 mmol), dimethylcarbamic chloride (6.1 mg, 0.056 mmol), and DIPEA (10.9 mg, 0.085 mmol) in DCM (282 μL) was stirred at room temperature overnight. Purification by HPLC Method A afforded the title compound as a TFA salt (6.1 mg) as an off-white film. 1H NMR (500 MHz, methanol-d4) δ ppm 1.26 (dd, J=9.3, 6.4 Hz, 6H), 1.50 (d, J=6.8 Hz, 3H), 1.89-1.98 (m, 2H), 2.12 (dq, J=13.2, 3.6 Hz, 2H), 2.55-2.64 (m, 1H), 2.88 (s, 6H), 2.94-3.03 (m, 3H), 3.34-3.41 (m, 3H), 3.72-3.82 (m, 1H), 4.14 (quin, J=6.5 Hz, 1H), 4.45 (dt, J=7.4, 3.8 Hz, 1H), 4.67 (q, J=6.8 Hz, 1H), 6.83-6.91 (m, 1H), 6.98 (ddd, J=11.4, 8.4, 3.2 Hz, 1H), 7.17 (td, J=9.3, 5.4 Hz, 1H); ESI-MS m/z [M+H]+ 489.90.

Workup

  1. customPurification by HPLC Method A

Sources & evidence

ORD record
ord-9b57329e7246464b91c496567cf9c7c2
Source dataset
uspto-grants-2015_11
Patent number
US09181249B2

Reaction notes

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