Diisopropylethylamine → HCID 131731103, compound

HRID 1915839Notes

Reaction equation

HRID 1915839 reaction equation
[NH2:1][C:2]1[CH:3]=[N:4][N:5]([CH3:23])[C:6]=1[N:7]1[CH2:12][CH2:11][CH:10]([CH2:13][N:14]([CH3:22])[C:15](=[O:21])[O:16][C:17]([CH3:20])([CH3:19])[CH3:18])[CH2:9][CH2:8]1.CCN(C(C)C)C(C)C.C1CN([P+](ON2N=NC3C=CC=CC2=3)(N2CCCC2)N2CCCC2)CC1.F[P-](F)(F)(F)(F)F.[C:66]([O:70][C:71]([NH:73][C:74]1[S:78][C:77]([C:79]2[C:84]([F:85])=[CH:83][CH:82]=[CH:81][C:80]=2[F:86])=[N:76][C:75]=1[C:87](O)=[O:88])=[O:72])([CH3:69])([CH3:68])[CH3:67]>C(Cl)Cl>[C:66]([O:70][C:71]([NH:73][C:74]1[S:78][C:77]([C:79]2[C:84]([F:85])=[CH:83][CH:82]=[CH:81][C:80]=2[F:86])=[N:76][C:75]=1[C:87]([NH:1][C:2]1[CH:3]=[N:4][N:5]([CH3:23])[C:6]=1[N:7]1[CH2:12][CH2:11][CH:10]([CH2:13][N:14]([CH3:22])[C:15](=[O:21])[O:16][C:17]([CH3:18])([CH3:19])[CH3:20])[CH2:9][CH2:8]1)=[O:88])=[O:72])([CH3:69])([CH3:67])[CH3:68]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 2724699PyBOPHCID 674381985-((Tert-butoxycarbonyl)amino)-2-(2,6-difluorophenyl)thiazole-4-carboxylic acidHCID 86680055HCID 86680055, compound

Product 1

HCID 131731103HCID 131731103, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

A solution of Intermediate 1, tert-butyl methyl((1-(1-methyl-4-nitro-1H-pyrazol-5-yl)piperidin-4-yl)methyl)carbamate (145 mg, 0.41 mmol) in MeOH (40 mL) was passed through the H-Cube® (full H2, 50° C., flow rate: 1 mL/min, 30 mm 10% Pd/C cartridge). The solvent was removed under reduced pressure to afford crude tert-butyl (1-(4-amino-1-methyl-1H-pyrazol-5-yl)piperidin-4-yl)methyl(methyl)carbamate as a red-brown oil (117 mg). To a solution of this amine (115 mg, 0.36 mmol) in DCM (20 mL) was added DIPEA (1.0 mL), PyBOP (0.46 g, 0.89 mmol) and 5-(tert-butoxycarbonylamino)-2-(2,6-difluorophenyl)thiazole-4-carboxylic acid from Example 25 (127 mg, 0.36 mmol) and the mixture was stirred at room temperature for 18 hr. The mixture was diluted with DCM (80 mL) and washed with water (20 mL). The organic layer was separated, dried over MgSO4 and the solvent removed under reduced pressure. Purification via silica gel column chromatography (75% EtOAc/isohexane) gave tert-butyl (1-(4-(5-tert-butoxycarbonylamino-2-(2,6-difluorophenyl)thiazole-4-carboxamido)-1-methyl-1H-pyrazol-5-yl)piperidin-4-yl)methyl(methyl)carbamate as a lilac foam (200 mg). This foam (200 mg, 0.30 mmol) was stirred with HCl in 1,4-dioxane (4 M, 3.8 mL, 15.1 mmol) in MeOH (5 mL) at room temperature for 3 days. The solvents were removed under reduced pressure and the crude residue was re-dissolved in MeOH and loaded onto an SCX column. The column was washed with MeOH and eluted with 7 N ammonia in MeOH to yield 101 as a beige solid (99 mg, 53% over three steps). 1H NMR (400 MHz, d6-DMSO) δ 8.75 (s, 1H), 7.59-7.49 (m, 3H), 7.44 (s, 1H), 7.32-7.22 (m, 2H), 6.90 (br s, 1H), 3.63 (s, 3H), 3.14-2.96 (m, 4H), 2.66 (d, J=6.8 Hz, 2H), 2.45 (s, 3H), 1.77 (d, J=12.6 Hz, 2H), 1.78-1.55 (m, 1H), 1.36-1.22 (m, 2H). LCMS (ES+) m/z 462 (M+1).

Workup

  1. washwashed with water (20 mL)
  2. customThe organic layer was separated
  3. dry with materialdried over MgSO4
  4. customthe solvent removed under reduced pressure
  5. customPurification via silica gel column chromatography (75% EtOAc/isohexane)

Sources & evidence

ORD record
ord-1a4518effa0d4a279c1da57d79fdd3dd
Source dataset
uspto-grants-2013_12
Patent number
US08614206B2

Reaction notes

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