Trifluoroacetic acid → 4-{3-(cyanomethyl)-3-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-1-yl}-N-isopropylpiperidine-1-carboxamide

HRID 1617394Notes

Reaction equation

HRID 1617394 reaction equation
[NH:1]1[CH2:6][CH2:5][CH:4]([N:7]2[CH2:10][C:9]([CH2:33][C:34]#[N:35])([N:11]3[CH:15]=[C:14]([C:16]4[C:17]5[CH:24]=[CH:23][N:22](COCC[Si](C)(C)C)[C:18]=5[N:19]=[CH:20][N:21]=4)[CH:13]=[N:12]3)[CH2:8]2)[CH2:3][CH2:2]1.C(N(CC)C(C)C)(C)C.[N:45]([CH:48]([CH3:50])[CH3:49])=[C:46]=[O:47].C(O)(C(F)(F)F)=O>C(Cl)Cl>[C:34]([CH2:33][C:9]1([N:11]2[CH:15]=[C:14]([C:16]3[C:17]4[CH:24]=[CH:23][NH:22][C:18]=4[N:19]=[CH:20][N:21]=3)[CH:13]=[N:12]2)[CH2:10][N:7]([CH:4]2[CH2:3][CH2:2][N:1]([C:46]([NH:45][CH:48]([CH3:50])[CH3:49])=[O:47])[CH2:6][CH2:5]2)[CH2:8]1)#[N:35]

Participants

6

Reactant 4

HCID 6422Trifluoroacetic acidHCID 61277Isopropyl isocyanateHCID 81531DiisopropylethylamineHCID 67391103{1-piperidin-4-yl-3-[4-(7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-3-yl}acetonitrile

Product 1

HCID 533805414-{3-(cyanomethyl)-3-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-1-yl}-N-isopropylpiperidine-1-carboxamide

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of {1-piperidin-4-yl-3-[4-(7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-3-yl}acetonitrile (0.075 g, 0.15 mmol, prepared as described in Example 1, Step H, except worked up to provide the free base) in methylene chloride (2 mL) was added N,N-diisopropylethylamine (0.026 mL, 0.15 mmol) followed by 2-isocyanatopropane (20 μL, 0.2 mmol, Aldrich). The reaction was continued for 2 hours. The crude product was deprotected by the addition of 1 mL TFA to the solution, which was stirred for 1 hour and evaporated. The deprotection was completed by stirring with ethylenediamine (0.2 mL) in methanol for 30 minutes. The product was purified by preparative HPLC-MS (C18 eluting with a gradient of MeCN/H2O containing 0.15% NH4OH). Fractions containing desired product were frozen and lyophilized. Yield: 0.025 g (37%); LC-MS: 448.2 (M+H)+. 1H NMR (300 MHz, CDCl3): δ 10.21 (br s, 1H), 8.85 (s, 1H), 8.41 (s, 1H), 8.32 (s, 1H), 7.41 (dd, 1H), 6.79 (dd, 1H), 4.22 (d, 1H), 4.04-3.87 (m, 1H), 3.81-3.69 (m, 4H), 3.61 (d, 2H), 3.40 (s, 2H), 3.00-2.86 (dq, 2H), 2.44-2.31 (m, 1H), 1.76-1.64 (m, 2H), 1.40-1.22 (m, 2H), 1.15 (d, 6H).

Workup

  1. customevaporated
  2. stirringby stirring with ethylenediamine (0.2 mL) in methanol for 30 minutes
  3. customThe product was purified by preparative HPLC-MS (C18
  4. washeluting with a gradient of MeCN/H2O containing 0.15% NH4OH)
  5. additionFractions containing desired product
  6. temperaturewere frozen

Sources & evidence

ORD record
ord-ca43ace6d2ff4cfda1c99869dfdd348f
Source dataset
uspto-grants-2014_07
Patent number
US08765734B2

Reaction notes

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