Diisopropylethylamine → HCID 86666864, compound

HRID 510949Notes

Reaction equation

HRID 510949 reaction equation
[NH2:1][CH:2]([C:4]1[C:5]([O:23][CH3:24])=[C:6]([CH:12]2[CH2:15][N:14]([C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])[CH2:13]2)[C:7]([F:11])=[C:8]([Cl:10])[CH:9]=1)[CH3:3].Br[C:26]1[N:34]=[CH:33][N:32]=[C:31]2[C:27]=1[N:28]=[CH:29][N:30]2[CH:35]1[CH2:40][CH2:39][CH2:38][CH2:37][O:36]1.CCN(C(C)C)C(C)C>C(O)C.C([O-])(O)=O.[Na+]>[Cl:10][C:8]1[C:7]([F:11])=[C:6]([CH:12]2[CH2:15][N:14]([C:16]([O:18][C:19]([CH3:20])([CH3:22])[CH3:21])=[O:17])[CH2:13]2)[C:5]([O:23][CH3:24])=[C:4]([CH:2]([NH:1][C:26]2[N:34]=[CH:33][N:32]=[C:31]3[C:27]=2[N:28]=[CH:29][N:30]3[CH:35]2[CH2:40][CH2:39][CH2:38][CH2:37][O:36]2)[CH3:3])[CH:9]=1

Participants

6

Reactant 3

HCID 81531DiisopropylethylamineHCID 583686166-Bromo-9-(tetrahydro-2H-pyran-2-YL)-9H-purineHCID 86666863tert-Butyl 3-[3-(1-aminoethyl)-5-chloro-6-fluoro-2-methoxyphenyl]azetidine-1-carboxylate

Product 1

HCID 86666864HCID 86666864, compoundYield 96.7%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 516892Sodium BicarbonateSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of tert-butyl 3-[3-(1-aminoethyl)-5-chloro-6-fluoro-2-methoxyphenyl]azetidine-1-carboxylate (22.5 mg, 0.0627 mmol), 6-bromo-9-(tetrahydro-2H-pyran-2-yl)-9H-purine (24 mg, 0.085 mmol, from Example 108, Step 1) and DIPEA (33 μL, 0.19 mmol) in ethanol (1.0 mL) was heated at 100° C. overnight. The mixture was diluted with sat. NaHCO3 solution, extracted with dichloromethane. The combined organic layers were dried over MgSO4 and concentrated to give tert-butyl 3-[3-chloro-2-fluoro-6-methoxy-5-(1-{[9-(tetrahydro-2H-pyran-2-yl)-9H-purin-6-yl]amino}ethyl)phenyl]azetidine-1-carboxylate (34 mg). LCMS calculated for C27H35ClFN6O4 (M+H)+: m/z=561.2. found: 561.2. The coupling product made above was treated with 4.0 M HCl in dioxane (0.5 mL, 2 mmol) in methylene chloride (0.2 mL) at room temperature for 1 hour. The reaction mixture was then evaporated to dryness to give N-[1-(3-azetidin-3-yl-5-chloro-4-fluoro-2-methoxyphenyl)ethyl]-9H-purin-6-amine dihydrochloride. The resultant HCl salt was dissolved in methanol (0.2 mL)/acetonitrile (0.2 mL)/THF (0.2 mL) and treated with DIPEA (0.1 mL, 0.6 mmol) until the solid dissolved. Acetone (0.05 mL, 0.6 mmol) was added and the resulting mixture was stirred at room temperature for 30 min before the addition of sodium triacetoxyborohydride (0.066 g, 0.31 mmol). The reaction mixture was stirred at room temperature for 4 h and then purified on prep-LCMS (XBridge C18 Column, eluting with a gradient of acetonitrile in water with 0.05% trifluoroacetic acid, at flow rate of 30 mL/min) to afford the desired product as TFA salt. LCMS calculated for C23H25ClFN6O (M+11)+: m/z=419.2. found: 419.1. 1H NMR (300 MHz, DMSO-d6) δ 9.96 (1H, m), 8.41 (1H, m), 8.23 (1H, s), 8.20 (1H, s), 7.53 (1H, s), 5.69 (1H, m), 4.52 (2H, m), 4.26 (1H, m), 4.12 (2H, m), 3.77 (3H, s), 2.08 (3H, m), 1.46 (3H, d, J=6.9 Hz), 1.11 (6H, m) ppm.

Workup

  1. extractionextracted with dichloromethane
  2. dry with materialThe combined organic layers were dried over MgSO4
  3. concentrationconcentrated

Sources & evidence

ORD record
ord-0473d8fa2b614d5bb099b6c06f140789
Source dataset
uspto-grants-2015_08
Patent number
US09096600B2

Reaction notes

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