Piperidine → HCID 86693526, compound

HRID 575462Notes

Reaction equation

HRID 575462 reaction equation
I[C:2]1[CH:18]=[CH:17][C:5]2[O:6][CH2:7][CH2:8][C:9]3[N:10]([N:11]=[C:12]([C:14]([NH2:16])=[O:15])[CH:13]=3)[C:4]=2[CH:3]=1.N1CCCCC1.[CH3:25][C:26]1[O:30][N:29]=[C:28]([C@:31]([OH:35])([C:33]#[CH:34])[CH3:32])[CH:27]=1>C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.[Cu]I>[OH:35][C@:31]([C:28]1[CH:27]=[C:26]([CH3:25])[O:30][N:29]=1)([CH3:32])[C:33]#[C:34][C:2]1[CH:18]=[CH:17][C:5]2[O:6][CH2:7][CH2:8][C:9]3[N:10]([N:11]=[C:12]([C:14]([NH2:16])=[O:15])[CH:13]=3)[C:4]=2[CH:3]=1

Participants

6

Reactant 3

HCID 8082PiperidineHCID 58221468(R)-2-(5-methylisoxazol-3-yl)but-3-yn-2-olHCID 86693521HCID 86693521, compound

Product 1

HCID 86693526HCID 86693526, compoundYield 56%

Reagents, catalysts & solvents 2

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418397HCID 178418397, compoundCatalyst

Conditions

Temperature
60 °C

Procedure

To a pressure tube was added 9-iodo-4,5-dihydrobenzo[b]pyrazolo[1,5-d][1,4]oxazepine-2-carboxamide (99 mg, 0.28 mmol) followed by piperidine (2.0 mL), tetrakis(triphenylphosphine)palladium (0) (32 mg, 0.03 mmol), copper(I) iodide (5 mg, 0.03 mmol) and (2R)-2-(5-methyl-1,2-oxazol-3-yl)but-3-yn-2-ol (63 mg, 0.42 mmol). The reaction vessel was sealed and heated at 60° C. for 30 minutes. The reaction mixture was cooled and concentrated in vacuo. and then co-evaporated with dichloromethane (2×10 ml). The crude material was purified by FCC (silica, 2-8% methanol in dichloromethane) to provide 59 mg (56%) of the title compound as a pale brown solid. 1H NMR (DMSO, 500 MHz) δ 1.80 (3H, s), 2.41 (3H, s), 3.17 (2H, t, J=5.8 Hz), 4.49 (2H, t, J=5.8 Hz), 6.32-6.39 (1H, m), 6.52 (1H, s), 6.72 (1H, s), 7.21 (1H, d, J=8.4 Hz), 7.34 (1H, s), 7.37 (1H, dd, J=8.4, 2.1 Hz), 7.79 (1H, s), 8.02 (1H, d, J=2.1 Hz); M+23=401.

Workup

  1. customThe reaction vessel was sealed
  2. temperatureThe reaction mixture was cooled
  3. concentrationconcentrated in vacuo
  4. customThe crude material was purified by FCC (silica, 2-8% methanol in dichloromethane)

Sources & evidence

ORD record
ord-cff1bb367f31485e83206218991a2e74
Source dataset
uspto-grants-2015_05
Patent number
US09034866B2

Reaction notes

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