Ammonia → 6-Fluoro-3-((S)-2-methyl-piperidin-1-yl)-[1,2,4]triazolo[4,3-a]pyridine

HRID 1402255노트

반응식

HRID 1402255 반응식
[F:1][C:2]1[CH:3]=[CH:4][C:5]([NH:8][NH:9][C:10]([N:12]2[CH2:17][CH2:16][CH2:15][CH2:14][C@@H:13]2[CH3:18])=O)=[N:6][CH:7]=1.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.CCN(CC)CC.ClC(Cl)(Cl)C(Cl)(Cl)Cl.N>C1COCC1.CO.C(Cl)Cl>[F:1][C:2]1[CH:3]=[CH:4][C:5]2[N:6]([C:10]([N:12]3[CH2:17][CH2:16][CH2:15][CH2:14][C@@H:13]3[CH3:18])=[N:9][N:8]=2)[CH:7]=1

참가 물질

9

반응물 5

HCID 222AmmoniaHCID 6214HexachloroethaneHCID 8471TriethylamineHCID 11776TriphenylphosphineHCID 86687104(S)-2-Methyl-piperidine-1-carboxylic acid N'-(5-fluoro-pyridin-2-yl)-hydrazide

생성물 1

HCID 866871056-Fluoro-3-((S)-2-methyl-piperidin-1-yl)-[1,2,4]triazolo[4,3-a]pyridine수율 89%

시약·촉매·용매 3

HCID 887Methanol용매HCID 6344Dichloromethane용매HCID 8028Tetrahydrofuran용매

실험 절차

To a solution of Intermediate 81b (657 mg, 2.60 mmol), Ph3P (1.37 g, 5.21 mmol) and Et3N (1.45 mL, 10.4 mmol) in THF (20 mL) at 0° C. was added hexachloroethane (1.23 g, 5.21 mmol) and the resulting yellow suspension was stirred at RT for 2 h, and at reflux for 19 h. The cooled solution was filtered and concentrated in vacuo. The brown oil was redissolved in MeOH (3 mL) and applied to an SCX-2 cartridge (20 g), washing with MeOH (100 mL). The product was eluted with 2M NH3 in MeOH (75 mL); concentration in vacuo gave a brown oil. FCC, using 1-5% [2M NH3 in MeOH] in DCM, gave the title compound as a brown oil (542 mg, 89%). LCMS (Method 3): Rt 3.00 min, m/z 235 [MH+].

후처리

  1. temperatureat reflux for 19 h
  2. filtrationThe cooled solution was filtered
  3. concentrationconcentrated in vacuo
  4. dissolutionThe brown oil was redissolved in MeOH (3 mL)
  5. washwashing with MeOH (100 mL)
  6. washThe product was eluted with 2M NH3 in MeOH (75 mL)
  7. concentrationconcentration in vacuo
  8. customgave a brown oil

출처 및 근거

ORD 기록
ord-8415347703114779801f7448f7a72ab4
출처 데이터셋
uspto-grants-2014_12
특허 번호
US08907094B2

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