Piperazine → HCID 58707305, compound

HRID 2426026Notes

Reaction equation

HRID 2426026 reaction equation
F[C:2]1[CH:3]=[CH:4][C:5]([S:19]([CH3:22])(=[O:21])=[O:20])=[C:6]([NH:8][CH:9]2[C:18]3[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=3)[CH2:12][CH2:11][CH2:10]2)[CH:7]=1.[NH:23]1[CH2:28][CH2:27][NH:26][CH2:25][CH2:24]1.C(N(CC)C(C)C)(C)C>C(#N)C>[CH3:22][S:19]([C:5]1[CH:4]=[CH:3][C:2]([N:23]2[CH2:28][CH2:27][NH:26][CH2:25][CH2:24]2)=[CH:7][C:6]=1[NH:8][CH:9]1[C:18]2[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=2)[CH2:12][CH2:11][CH2:10]1)(=[O:21])=[O:20]

Participants

5

Reactant 3

HCID 4837PiperazineHCID 81531DiisopropylethylamineHCID 11551484HCID 11551484, compound

Product 1

HCID 58707305HCID 58707305, compoundYield 119.4%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A solution of N-(5-fluoro-2-(methylsulfonyl)phenyl)-1,2,3,4-tetrahydronaphthalen-1-amine (720 mg, 2.26 mmol), piperazine (583 mg, 6.77 mmol) and N,N-diisopropylethylamine (1.2 mL, 6.77 mmol) in acetonitrile (10 mL) was stirred at reflux for 16 h. The reaction mixture was cooled down and concentrated under reduced pressure. The residue was taken up in dichloromethane, washed with water, dried and concentrated in vacuo to yield 1.04 g of the crude aniline. The crude product was purified by PTLC (20% ethyl acetate in hexanes) to yield 257 mg (30%) of 1,2,3,4-tetrahydro-N-(2-(methylsulfonyl)-5-(piperazin-1-yl)phenyl)naphthalen-1-amine: 1H NMR (400 MHz, CD3OD): δ 7.60 (d, 1H), 7.30 (d, 1H), 7.20-7.10 (m, 2H), 6.32-6.26 (m, 2H), 6.23 (br s, 1H), 4.67 (dd, 1H), 3.26 (br t, 4H), 2.98 (br t, 4H), 2.92 (s, 3H), 2.90-2.72 (m, 2H), 2.02-1.80 (m, 4H). MS (ESI) m/z: Calculated: 385.52; Observed: 386.2 (M++1).

Workup

  1. temperatureat reflux for 16 h
  2. temperatureThe reaction mixture was cooled down
  3. concentrationconcentrated under reduced pressure
  4. washwashed with water
  5. customdried
  6. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-ee333760142149d988d99092c522b900
Source dataset
uspto-grants-2011_06
Patent number
US07968538B2

Reaction notes

Loading…