Ammonia → (R)-1-(6-Fluoro-[1,2,4]triazolo[4,3-a]pyridin-3-yl)-pyrrolidin-3-ol

HRID 2284986Notes

Reaction equation

HRID 2284986 reaction equation
Cl[C:2]1[N:6]2[CH:7]=[C:8]([F:11])[CH:9]=[CH:10][C:5]2=[N:4][N:3]=1.[OH:12][C@@H:13]1[CH2:17][CH2:16][NH:15][CH2:14]1.N>CN1C(=O)CCC1.CO.C(Cl)Cl>[F:11][C:8]1[CH:9]=[CH:10][C:5]2[N:6]([C:2]([N:15]3[CH2:16][CH2:17][C@@H:13]([OH:12])[CH2:14]3)=[N:3][N:4]=2)[CH:7]=1

Participants

7

Reactant 3

HCID 222AmmoniaHCID 2759337(R)-3-PyrrolidinolHCID 552675403-Chloro-6-fluoro-[1,2,4]triazolo[4,3-a]pyridine

Product 1

HCID 86687016(R)-1-(6-Fluoro-[1,2,4]triazolo[4,3-a]pyridin-3-yl)-pyrrolidin-3-olYield 44%

Reagents, catalysts & solvents 3

HCID 887MethanolSolventHCID 6344DichloromethaneSolventHCID 13387N-methyl-2-pyrrolidoneSolvent

Conditions

Temperature
160 °C

Procedure

A mixture of Intermediate 24b (300 mg, 1.74 mmol) and (R)-3-hydroxypyrrolidine (607 mg, 9.96 mmol) in NMP (4 mL) was heated in the microwave at 160° C. for 2 h. The reaction mixture was applied to an SCX-2 cartridge (70 g) and washed with MeOH. The product was eluted with 2M NH3 in MeOH; concentration in vacuo gave a residue. FCC, using 0-10% [2M NH3 in MeOH] in DCM, gave the title compound (170 mg, 44%). LCMS (Method 1): Rt 0.39 min, m/z 223 [MH+].

Workup

  1. washwashed with MeOH
  2. washThe product was eluted with 2M NH3 in MeOH
  3. concentrationconcentration in vacuo
  4. customgave a residue

Sources & evidence

ORD record
ord-c33264ce1d12483fb7f3f98df3807cd6
Source dataset
uspto-grants-2015_09
Patent number
US09145413B2

Reaction notes

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