Diisopropylethylamine → (S)-tert-butyl 4-(1-(4-chlorophenyl)-3-hydroxypropylcarbamoyl)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidin-4-ylcarbamate
Reaction equation
[NH2:1][C@H:2]([C:6]1[CH:11]=[CH:10][C:9]([Cl:12])=[CH:8][CH:7]=1)[CH2:3][CH2:4][OH:5].[C:13]([O:17][C:18]([NH:20][C:21]1([C:36](O)=[O:37])[CH2:26][CH2:25][N:24]([C:27]2[C:28]3[CH:35]=[CH:34][NH:33][C:29]=3[N:30]=[CH:31][N:32]=2)[CH2:23][CH2:22]1)=[O:19])([CH3:16])([CH3:15])[CH3:14].CCN(C(C)C)C(C)C.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CC(N(C)C)=O>[Cl:12][C:9]1[CH:8]=[CH:7][C:6]([C@@H:2]([NH:1][C:36]([C:21]2([NH:20][C:18](=[O:19])[O:17][C:13]([CH3:15])([CH3:14])[CH3:16])[CH2:22][CH2:23][N:24]([C:27]3[C:28]4[CH:35]=[CH:34][NH:33][C:29]=4[N:30]=[CH:31][N:32]=3)[CH2:25][CH2:26]2)=[O:37])[CH2:3][CH2:4][OH:5])=[CH:11][CH:10]=1Participants
Reactant 4
HCID 81531Diisopropylethylamine
HCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)
HCID 25418153(3S)-3-amino-3-(4-chlorophenyl)propan-1-ol2×
HCID 577503944-((tert-Butoxycarbonyl)amino)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidine-4-carboxylic acid2×Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 20 °C
Procedure
(S)-3-Amino-3-(4-chlorophenyl)propan-1-ol (Intermediate 47) (2.055 g, 11.07 mmol) was added in one portion to 4-(tert-butoxycarbonylamino)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidine-4-carboxylic acid (Intermediate 1) (4 g, 11.07 mmol) and DIPEA (5.80 ml, 33.20 mmol) in DMA (40 ml). HATU (4.63 g, 12.18 mmol) was added and the resulting solution was stirred at 20° C. for 24 hours. The reaction mixture was evaporated to dryness then diluted with EtOAc (300 mL), and washed sequentially with water (50 mL) and saturated brine (50 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford crude product. The crude product was purified by flash silica chromatography, elution gradient 2 to 6% MeOH with ammonia in DCM. Pure fractions were evaporated to dryness and triturated with dioxane (40 ml) to afford (S)-tert-butyl 4-(1-(4-chlorophenyl)-3-hydroxypropylcarbamoyl)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidin-4-ylcarbamate (Intermediate 22) (4.82 g, 82%) as a white solid. (S)-tert-butyl 4-(1-(4-chlorophenyl)-3-hydroxypropylcarbamoyl)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidin-4-ylcarbamate (Intermediate 22) (4.82 g, 82%) was suspended in dioxane (40.0 ml) and 4M hydrogen chloride in dioxane (7.69 ml, 221.36 mmol) added. The reaction was stirred at ambient temperature for 2 hours. The crude product was purified by ion exchange chromatography, using an SCX column. The desired product was eluted from the column using 3.5M NH3/MeOH and pure fractions were evaporated to dryness. The crude product was purified by preparative HPLC (Waters XBridge Prep C18 OBD column, 5 μm silica, 19 mm diameter, 100 mm length), using decreasingly polar mixtures of water (containing 1% NH3) and MeCN as eluents. Fractions containing the desired compound were evaporated to dryness to afford (S)-4-amino-N-(1-(4-chlorophenyl)-3-hydroxypropyl)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidine-4-carboxamide (1.200 g, 25.3%) as a white solid.
Workup
- customThe reaction mixture was evaporated to dryness
- additionthen diluted with EtOAc (300 mL)
- washwashed sequentially with water (50 mL) and saturated brine (50 mL)
- dry with materialThe organic layer was dried over MgSO4
- filtrationfiltered
- customevaporated
- customto afford crude product
- customThe crude product was purified by flash silica chromatography, elution gradient 2 to 6% MeOH with ammonia in DCM
- customPure fractions were evaporated to dryness
- customtriturated with dioxane (40 ml)
Sources & evidence
- ORD record
- ord-5916794dd6e74664977ba3f9cdeec31e
- Source dataset
- uspto-grants-2012_01
- Patent number
- US08101623B2
Reaction notes
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