Trifluoroacetic acid → 5-(2-benzyl-2H-indazol-6-yl)-7-(4-piperazin-1-ylphenyl)pyrrolo[2,1-f][1,2,4]triazin-4-amine

HRID 1972769Notes

Reaction equation

HRID 1972769 reaction equation
[NH2:1][C:2]1[C:7]2=[C:8]([C:30]3[CH:31]=[CH:32][C:33]4[C:37]([CH:38]=3)=[N:36][N:35]([CH2:39][C:40]3[CH:45]=[CH:44][CH:43]=[CH:42][CH:41]=3)[CH:34]=4)[CH:9]=[C:10]([C:11]3[CH:16]=[CH:15][C:14]([N:17]4[CH2:22][CH2:21][N:20](C(OC(C)(C)C)=O)[CH2:19][CH2:18]4)=[CH:13][CH:12]=3)[N:6]2[N:5]=[CH:4][N:3]=1.FC(F)(F)C(O)=O>ClCCl>[CH2:39]([N:35]1[CH:34]=[C:33]2[C:37]([CH:38]=[C:30]([C:8]3[CH:9]=[C:10]([C:11]4[CH:16]=[CH:15][C:14]([N:17]5[CH2:22][CH2:21][NH:20][CH2:19][CH2:18]5)=[CH:13][CH:12]=4)[N:6]4[C:7]=3[C:2]([NH2:1])=[N:3][CH:4]=[N:5]4)[CH:31]=[CH:32]2)=[N:36]1)[C:40]1[CH:45]=[CH:44][CH:43]=[CH:42][CH:41]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 58529864tert-butyl 4-{4-[4-amino-5-(2-benzyl-2H-indazol-6-yl)pyrrolo[2,1-f][1,2,4]triazin-7-yl]phenyl}piperazine-1-carboxylate

Product 1

HCID 585294985-(2-benzyl-2H-indazol-6-yl)-7-(4-piperazin-1-ylphenyl)pyrrolo[2,1-f][1,2,4]triazin-4-amineYield 96%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a suspension of tert-butyl 4-{4-[4-amino-5-(2-benzyl-2H-indazol-6-yl)pyrrolo[2,1-f][1,2,4]triazin-7-yl]phenyl}piperazine-1-carboxylate (610 mg, 1.02 mmol) in dichloromethane (6 mL) was added trifluoroacetic acid (2 mL). The reaction was stirred (rt) for 17 h. The mixture was evaporated to dryness and saturated aqueous NaHCO3 was added to the residue. The resulting solid was collected by filtration and was dried in vacuo to afford 489 mg (96%) of the desired product. 1H NMR (300 MHz, DMSO-d6) δ 8.54 (s, 1 H), 7.99-7.91 (m, 3 H), 7.81 (d, 1 H), 7.65 (s, 1 H), 7.41-7.25 (m, 5 H), 7.19 (d, 1 H), 7.06-6.96 (m, 3 H), 5.65 (s, 2 H), 3.14 (s, 4 H), 2.89 (s, 4 H); ES-MS m/z 501.4 HPLC RT (min) 2.25.

Workup

  1. customThe mixture was evaporated to dryness and saturated aqueous NaHCO3
  2. additionwas added to the residue
  3. filtrationThe resulting solid was collected by filtration
  4. customwas dried in vacuo

Sources & evidence

ORD record
ord-7e86c2d509214ca194d8af23cb44173a
Source dataset
uspto-grants-2013_04
Patent number
US08431695B2

Reaction notes

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