Diisopropylethylamine → tert-butyl 4-{3-(cyanomethyl)-3-[4-(7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-1-yl}piperidine-1-carboxylate

HRID 1617341Notes

Reaction equation

HRID 1617341 reaction equation
Cl.Cl.[CH3:3][Si:4]([CH3:31])([CH3:30])[CH2:5][CH2:6][O:7][CH2:8][N:9]1[C:13]2[N:14]=[CH:15][N:16]=[C:17]([C:18]3[CH:19]=[N:20][N:21]([C:23]4([CH2:27][C:28]#[N:29])[CH2:26][NH:25][CH2:24]4)[CH:22]=3)[C:12]=2[CH:11]=[CH:10]1.O=[C:33]1[CH2:38][CH2:37][N:36]([C:39]([O:41][C:42]([CH3:45])([CH3:44])[CH3:43])=[O:40])[CH2:35][CH2:34]1.C(N(CC)C(C)C)(C)C.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C1COCC1.[Cl-].[Na+].O>[C:28]([CH2:27][C:23]1([N:21]2[CH:22]=[C:18]([C:17]3[C:12]4[CH:11]=[CH:10][N:9]([CH2:8][O:7][CH2:6][CH2:5][Si:4]([CH3:30])([CH3:3])[CH3:31])[C:13]=4[N:14]=[CH:15][N:16]=3)[CH:19]=[N:20]2)[CH2:24][N:25]([CH:33]2[CH2:38][CH2:37][N:36]([C:39]([O:41][C:42]([CH3:45])([CH3:44])[CH3:43])=[O:40])[CH2:35][CH2:34]2)[CH2:26]1)#[N:29]

Participants

7

Reactant 4

HCID 81531DiisopropylethylamineHCID 735900tert-Butyl 4-oxopiperidine-1-carboxylateHCID 5049666Sodium triacetoxyborohydrideHCID 67391464{3-[4-(7-{[2-(Trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-3-yl}acetonitrile dihydrochloride

Product 1

HCID 58431327tert-butyl 4-{3-(cyanomethyl)-3-[4-(7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-1-yl}piperidine-1-carboxylate

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 57417360Sodium chloride; waterSolvent

Procedure

Into the solution of {3-[4-(7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-3-yl}acetonitrile dihydrochloride (2.6 g, 6.3 mmol), tert-butyl 4-oxo-1-piperidinecarboxylate (1.3 g, 6.3 mmol) in THF (30 mL) were added N,N-diisopropylethylamine (4.4 mL, 25 mmol) and sodium triacetoxyborohydride (2.2 g, 10 mmol). The mixture was stirred at room temperature overnight. After adding 20 mL of brine, the solution was extracted with EtOAc. The extract was dried over anhydrous Na2SO4 and concentrated. The residue was purified by combiflash column eluting with 30-80% EtOAc in hexanes to give the desired product, tert-butyl 4-{3-(cyanomethyl)-3-[4-(7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-1-yl}piperidine-1-carboxylate. Yield: 3.2 g (86%); LC-MS: [M+H]+=593.3.

Workup

  1. extractionthe solution was extracted with EtOAc
  2. dry with materialThe extract was dried over anhydrous Na2SO4
  3. concentrationconcentrated
  4. customThe residue was purified by combiflash column
  5. washeluting with 30-80% EtOAc in hexanes

Sources & evidence

ORD record
ord-12174df4ef904b71bd7a0904426358b7
Source dataset
uspto-grants-2014_07
Patent number
US08765734B2

Reaction notes

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