Diisopropylethylamine → HCID 89456772, compound

HRID 1915888Notes

Reaction equation

HRID 1915888 reaction equation
[NH2:1][C:2]1[CH:3]=[N:4][N:5]([CH3:23])[C:6]=1[N:7]1[CH2:13][C:12]([OH:15])([CH3:14])[CH2:11][N:10]([C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])[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[CH2:13][C:12]([OH:15])([CH3:14])[CH2:11][N:10]([C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])[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 86680092HCID 86680092, compound

Product 1

HCID 89456772HCID 89456772, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a solution of Intermediate 44, tert-butyl 6-hydroxy-6-methyl-4-(1-methyl-4-nitro-1H-pyrazol-5-yl)-1,4-diazepane-1-carboxylate (70 mg, 0.20 mmol) in MeOH (5 mL), was added 10% palladium on carbon (10 mg) and the mixture was stirred under an atmosphere of H2 (60 psi) for 16 hr. The mixture was filtered through Celite® and the solvent was removed under reduced pressure to afford tert-butyl 4-(4-amino-1-methyl-1H-pyrazol-5-yl)-6-hydroxy-6-methyl-1,4-diazepane-1-carboxylate as an oil. To a solution of this amine in DCM (5 mL), DIPEA (0.1 mL, 9.6 mmol), PyBOP (0.16 g, 0.3 mmol) and 5-(tert-butoxycarbonylamino)-2-(2,6-difluorophenyl)-thiazole-4-carboxylic acid (78 mg, 0.22 mmol) were added and the mixture was stirred at room temperature for 18 hr. The mixture was diluted with DCM (30 mL) and washed with water (10 mL). The organic layer was separated, dried over MgSO4 and the solvent removed under reduced pressure. Purification via silica gel column chromatography (0-60% EtOAc/isohexane) gave tert-butyl 4-(4-(5-(tert-butoxycarbonylamino)-2-(2,6-difluorophenyl)thiazole-4-carboxamido)-1-methyl-1H-pyrazol-5-yl)-6-hydroxy-6-methyl-1,4-diazepane-1-carboxylate as a solid (122 mg). To this solid (122 mg, 0.18 mmol) in MeOH (1 mL), a solution of HCl (4 M in 1,4-dioxane, 3.2 mL, 12.9 mmol) was added and the resulting solution was stirred at room temperature for 16 hr. The solvents were removed under reduced pressure and the crude residue was dissolved in MeOH and loaded onto an SCX column. The column was washed with MeOH and eluted with 7 N ammonia in MeOH. Purification by preparative HPLC gave 190 as an off-white solid (40 mg, 44% over three steps). 1H NMR (400 MHz, d6-DMSO) δ 9.19 (s, 1H), 8.24 (s, 1H), 7.59-7.48 (m, 3H), 7.33-7.23 (m, 2H), 3.69 (s, 3H), 3.26-3.02 (m, 4H), 2.98-2.73 (m, 4H), 1.01 (s, 3H). Alkyl NH and OH not observed. LCMS (ES+) m/z 464 (M+1).

Workup

  1. washwashed with water (10 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 (0-60% EtOAc/isohexane)

Sources & evidence

ORD record
ord-c91a808fc04f41ce9631ec4054753406
Source dataset
uspto-grants-2013_12
Patent number
US08614206B2

Reaction notes

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