Diisopropylethylamine → 6-bromo-4-(((3R,4S)-1-(1-cyanocyclopropanecarbonyl)-4-methoxypyrrolidin-3-yl)amino)pyrrolo[1,2-b]pyridazine-3-carboxamide

HRID 877819Notes

Reaction equation

HRID 877819 reaction equation
I.[Br:2][C:3]1[CH:4]=[C:5]2[C:10]([NH:11][C@H:12]3[C@@H:16]([O:17][CH3:18])[CH2:15][NH:14][CH2:13]3)=[C:9]([C:19]([NH2:21])=[O:20])[CH:8]=[N:7][N:6]2[CH:22]=1.[C:23]([C:25]1([C:28](O)=[O:29])[CH2:27][CH2:26]1)#[N:24].F[P-](F)(F)(F)(F)F.N1(O[P+](N(C)C)(N(C)C)N(C)C)C2C=CC=CC=2N=N1.CCN(C(C)C)C(C)C>CN(C=O)C>[Br:2][C:3]1[CH:4]=[C:5]2[C:10]([NH:11][C@H:12]3[C@@H:16]([O:17][CH3:18])[CH2:15][N:14]([C:28]([C:25]4([C:23]#[N:24])[CH2:27][CH2:26]4)=[O:29])[CH2:13]3)=[C:9]([C:19]([NH2:21])=[O:20])[CH:8]=[N:7][N:6]2[CH:22]=1

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 151348Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphateHCID 27332591-Cyanocyclopropanecarboxylic acidHCID 682919346-bromo-4-(((3R,4S)-4-methoxypyrrolidin-3-yl)amino)pyrrolo[1,2-b]pyridazine-3-carboxamide hydroiodide

Product 1

HCID 682909856-bromo-4-(((3R,4S)-1-(1-cyanocyclopropanecarbonyl)-4-methoxypyrrolidin-3-yl)amino)pyrrolo[1,2-b]pyridazine-3-carboxamideYield 90.1%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A solution of (±)-6-bromo-4-((cis-4-methoxypyrrolidin-3-yl)amino)pyrrolo[1,2-b]pyridazine-3-carboxamide hydroiodide (0.30 g, 0.62 mmol) in DMF (0.5 mL), was added 1-cyanocyclopropanecarboxylic acid (0.073 g, 0.65 mmol), BOP (0.30 g, 0.68 mmol) and DIPEA (0.23 mL, 1.31 mmol). The mixture was stirred at rt for 2 h, quenched with water, stirred, filtered and rinsed with water. The brown solid was dried under vacuum to afford (±)-6-bromo-4-((cis-1-(1-cyanocyclopropanecarbonyl)-4-methoxypyrrolidin-3-yl)amino)pyrrolo[1,2-b]pyridazine-3-carboxamide (250 mg, 90% yield) as a brown solid. 1H NMR (400 MHz, METHANOL-d4) δ 8.17 (d, J=6.6 Hz, 1H), 7.68 (d, J=7.0 Hz, 1H), 7.11 (d, J=17.8 Hz, 1H), 5.09-4.92 (m, 2H), 4.55 (br. s., 2H), 4.46-3.93 (m, 3H), 3.88-3.59 (m, 2H), 3.50 (d, J=14.1 Hz, 3H), 1.75-1.46 (m, 4H); MS (ES+) m/z: 446.1, 447.2 (M+H); LC retention time: 3.1 min (analytical HPLC Method J).

Workup

  1. customquenched with water
  2. stirringstirred
  3. filtrationfiltered
  4. washrinsed with water
  5. customThe brown solid was dried under vacuum

Sources & evidence

ORD record
ord-ba76fba9ad2b46dba13f24bd6efd9734
Source dataset
uspto-grants-2015_03
Patent number
US08987268B2

Reaction notes

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