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

HRID 2282432Notes

Reaction equation

HRID 2282432 reaction equation
FC(F)(F)S([O:6][Si:7]([CH:14]([CH3:16])[CH3:15])([CH:11]([CH3:13])[CH3:12])[CH:8]([CH3:10])[CH3:9])(=O)=O.[F:19][C:20]1[CH:21]=[CH:22][C:23]2[N:24]([C:26]([N:29]3[CH2:33][CH2:32][C@@H:31](O)[CH2:30]3)=[N:27][N:28]=2)[CH:25]=1.CCN(CC)CC.N>CO.C(Cl)Cl.CN(C=O)C>[F:19][C:20]1[CH:21]=[CH:22][C:23]2[N:24]([C:26]([N:29]3[CH2:33][CH2:32][C@@H:31]([O:6][Si:7]([CH:8]([CH3:9])[CH3:10])([CH:11]([CH3:12])[CH3:13])[CH:14]([CH3:15])[CH3:16])[CH2:30]3)=[N:27][N:28]=2)[CH:25]=1

Participants

8

Reactant 4

HCID 222AmmoniaHCID 8471TriethylamineHCID 2724529Triisopropylsilyl trifluoromethanesulfonateHCID 86687016(R)-1-(6-Fluoro-[1,2,4]triazolo[4,3-a]pyridin-3-yl)-pyrrolidin-3-ol

Product 1

HCID 866870176-Fluoro-3-((R)-3-triisopropylsilanyloxy-pyrrolidin-1-yl)-[1,2,4]triazolo[4,3-a]pyridineYield 90%

Reagents, catalysts & solvents 3

HCID 887MethanolSolventHCID 6228DimethylformamideSolventHCID 6344DichloromethaneSolvent

Procedure

Triisopropylsilyl trifluoromethanesulfonate (280 mg, 0.919 mmol) was added to a solution of Intermediate 38a (170 mg, 0.766 mmol) and Et3N (116 mg, 1.14 mmol) in a DMF (3 mL) and the mixture stirred at RT for 1 h. The reaction mixture was applied to an SCX-2 cartridge (10 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 (260 mg, 90%). LCMS (Method 3): Rt 4.26 min, m/z 379 [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-52089bb32b534c7b8aee5b6670426ce5
Source dataset
uspto-grants-2015_09
Patent number
US09139584B2

Reaction notes

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