Monoethyl malonate → ethyl 3-(4-(5-(5-amino-6-(5-(tert-butyl)-1,3,4-oxadiazol-2-yl)pyrazin-2-yl)-1-ethyl-1H-1,2,4-triazol-3-yl)piperidin-1-yl)-3-oxopropanoate

HRID 1749692Notes

Reaction equation

HRID 1749692 reaction equation
F[P-](F)(F)(F)(F)F.N1(OC(N(C)C)=[N+](C)C)C2N=CC=CC=2N=N1.[CH2:25]([O:27][C:28](=[O:33])[CH2:29][C:30]([OH:32])=O)[CH3:26].C(N(C(C)C)C(C)C)C.[C:43]([C:47]1[O:51][C:50]([C:52]2[C:53]([NH2:71])=[N:54][CH:55]=[C:56]([C:58]3[N:62]([CH2:63][CH3:64])[N:61]=[C:60]([CH:65]4[CH2:70][CH2:69][NH:68][CH2:67][CH2:66]4)[N:59]=3)[N:57]=2)=[N:49][N:48]=1)([CH3:46])([CH3:45])[CH3:44]>CN(C=O)C>[NH2:71][C:53]1[N:54]=[CH:55][C:56]([C:58]2[N:62]([CH2:63][CH3:64])[N:61]=[C:60]([CH:65]3[CH2:66][CH2:67][N:68]([C:30](=[O:32])[CH2:29][C:28]([O:27][CH2:25][CH3:26])=[O:33])[CH2:69][CH2:70]3)[N:59]=2)=[N:57][C:52]=1[C:50]1[O:51][C:47]([C:43]([CH3:44])([CH3:45])[CH3:46])=[N:48][N:49]=1

Participants

6

Reactant 4

HCID 70615Monoethyl malonateHCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 86727668HCID 86727668, compound

Product 1

HCID 86727674ethyl 3-(4-(5-(5-amino-6-(5-(tert-butyl)-1,3,4-oxadiazol-2-yl)pyrazin-2-yl)-1-ethyl-1H-1,2,4-triazol-3-yl)piperidin-1-yl)-3-oxopropanoateYield 147%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

O-(7-Azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (474 mg, 1.25 mmol) was added over 30 seconds in portions to a stirred solution of 3-ethoxy-3-oxopropanoic acid (150 mg, 1.13 mmol), N-ethyl-N-isopropylpropan-2-amine (0.394 mL, 2.26 mmol) and 3-(5-(tert-butyl)-1,3,4-oxadiazol-2-yl)-5-(1-ethyl-3-(piperidin-4-yl)-1H-1,2,4-triazol-5-yl)pyrazin-2-amine (450 mg, 1.13 mmol) dissolved in DMF (20 mL) at 50° C. The resulting solution was sampled after 1 min (complete reaction) and immediately allowed to cool to ambient temperature. The reaction mixture was concentrated and diluted with EtOAc (100 mL), and washed sequentially with water (20 mL) and saturated brine (20 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford crude ethyl 3-(4-(5-(5-amino-6-(5-(tert-butyl)-1,3,4-oxadiazol-2-yl)pyrazin-2-yl)-1-ethyl-1H-1,2,4-triazol-3-yl)piperidin-1-yl)-3-oxopropanoate (850 mg).

Workup

  1. aliquotThe resulting solution was sampled after 1 min
  2. custom(complete reaction)
  3. concentrationThe reaction mixture was concentrated
  4. additiondiluted with EtOAc (100 mL)
  5. washwashed sequentially with water (20 mL) and saturated brine (20 mL)
  6. dry with materialThe organic layer was dried over MgSO4
  7. filtrationfiltered
  8. customevaporated

Sources & evidence

ORD record
ord-354c2ad5811c42dfb1c214f525958c64
Source dataset
uspto-grants-2015_10
Patent number
US09156831B2

Reaction notes

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