Diisopropylethylamine → HCID 58707252, compound

HRID 2426083Notes

Reaction equation

HRID 2426083 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([CH:18]=[C:19]([Cl:21])[CH:20]=1)[CH2:5][NH:6][C:7]1[CH:12]=[C:11](F)[CH:10]=[CH:9][C:8]=1[S:14]([CH3:17])(=[O:16])=[O:15].[N:22]1([C:28]([O:30][C:31]([CH3:34])([CH3:33])[CH3:32])=[O:29])[CH2:27][CH2:26][NH:25][CH2:24][CH2:23]1.C(N(CC)C(C)C)(C)C>C(#N)C>[Cl:1][C:2]1[CH:3]=[C:4]([CH:18]=[C:19]([Cl:21])[CH:20]=1)[CH2:5][NH:6][C:7]1[CH:12]=[C:11]([N:25]2[CH2:24][CH2:23][N:22]([C:28]([O:30][C:31]([CH3:34])([CH3:33])[CH3:32])=[O:29])[CH2:27][CH2:26]2)[CH:10]=[CH:9][C:8]=1[S:14]([CH3:17])(=[O:16])=[O:15]

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 143452tert-Butyl piperazine-1-carboxylateHCID 58707332HCID 58707332, compound

Product 1

HCID 58707252HCID 58707252, compoundYield 23%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A mixture of N-(3,5-dichlorobenzyl)-5-fluoro-2-(methylsulfonyl)benzenamine (2.1 mmol), t-butyl piperazine-1-carboxylate (2.2 mmol), N,N-diisopropylethylamine (4.4 mmol) and acetonitrile (10 mL) was heated at reflux for 18 h, cooled to room temperature and concentrated in vacuo. The residue was dissolved in ethyl acetate; this solution was washed with water, dried over Na2SO4 and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel using 10% ethyl acetate in hexanes as eluent to yield the title compounds as a yellow solid (23%). 1H NMR (400 MHz, CDCl3): δ 9.38 (br, 1H), 7.67 (d, 1 H), 7.31 (s, 1H), 7.21 (s, 2H), 6.13 (dd, 1H), 5.70 (d, 1H), 4.42 (d, 2H), 3.54 (m, 4H), 3.38 (m, 4H), 1.49 (s, 9H). MS (ESI) m/z: Calculated: 514.47; Observed: 515.6 (M+1).

Workup

  1. temperaturewas heated
  2. temperatureat reflux for 18 h
  3. concentrationconcentrated in vacuo
  4. dissolutionThe residue was dissolved in ethyl acetate
  5. washthis solution was washed with water
  6. dry with materialdried over Na2SO4
  7. concentrationconcentrated in vacuo
  8. customThe residue was purified by flash column chromatography on silica gel using 10% ethyl acetate in hexanes as eluent

Sources & evidence

ORD record
ord-b9ca9a6bb0124be3a2d5f6fa56fc63f1
Source dataset
uspto-grants-2011_06
Patent number
US07968538B2

Reaction notes

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