Trifluoroacetic acid → 4H,5H,6H-pyrrolo(1,2-b)pyrazol-2-amine

HRID 407830Notes

Reaction equation

HRID 407830 reaction equation
[N:1]1[N:2]2[CH2:16][CH2:15][CH2:14][C:3]2=[CH:4][C:5]=1[NH:6]C(=O)OC(C)(C)C.FC(F)(F)C(O)=O>ClCCl>[N:1]1[N:2]2[CH2:16][CH2:15][CH2:14][C:3]2=[CH:4][C:5]=1[NH2:6]

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 86684089tert-Butyl 5,6-Dihydro-4H-pyrrolo[1,2-b]pyrazol-2-ylcarbamate

Product 1

HCID 675370624H,5H,6H-pyrrolo(1,2-b)pyrazol-2-amine

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 162b (45 mg, 0.20 mmol) in dichloromethane (1.5 mL) was added trifluoroacetic acid (1 mL) at room temperature. The solution was stirred for 5 h. It was then concentrated under reduced pressure to afford 162c which was used in the next step without further purification. MS-ESI: [M+H]+ 124.3

Workup

  1. concentrationIt was then concentrated under reduced pressure

Sources & evidence

ORD record
ord-2daf320a466c408299a39e9d4fc474fb
Source dataset
uspto-grants-2014_06
Patent number
US08754077B2

Reaction notes

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