Triethylamine → HCID 8962862, compound

HRID 1888450Notes

Reaction equation

HRID 1888450 reaction equation
[Br:1][C:2]1[CH:9]=[CH:8][C:5]([CH2:6]Br)=[CH:4][CH:3]=1.C(N(CC)CC)C.[NH:17]1[CH2:22][CH2:21][NH:20][CH2:19][C:18]1=[O:23]>C1COCC1>[Br:1][C:2]1[CH:9]=[CH:8][C:5]([CH2:6][N:20]2[CH2:21][CH2:22][NH:17][C:18](=[O:23])[CH2:19]2)=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 685274-Bromobenzyl bromideHCID 231360Piperazin-2-one

Product 1

HCID 8962862HCID 8962862, compoundYield 93%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A mixture of 4-bromobenzyl bromide (1.0 g, 4.0 mmol), triethylamine (0.84 mL, 6.0 mmol) and piperazin-2-one (0.81 g, 8.0 mmol) in THF (20 mL) was stirred at ambient temperature for 16 h. The solvent was evaporated and the resultant residue diluted with saturated aqueous sodium bicarbonate solution and extracted with ethyl acetate (2×50 mL). The combined organic layer was dried over sodium sulfate, filtered and evaporated to afford the title compound (1.0 g, 93%). 1H NMR (CDCl3, 300 MHz): δ 7.49-7.43 (m, 2 H); 7.24-7.16 (m, 2 H); 6.20 (s, 1 H); 3.53 (s, 2 H); 3.38-3.32 (m, 2 H); 3.15 (s, 2 H); 2.66-2.59 (m, 2 H).). LCMS (Method G): RT=2.54 min, M−H+=268.

Workup

  1. customThe solvent was evaporated
  2. additionthe resultant residue diluted with saturated aqueous sodium bicarbonate solution
  3. extractionextracted with ethyl acetate (2×50 mL)
  4. dry with materialThe combined organic layer was dried over sodium sulfate
  5. filtrationfiltered
  6. customevaporated

Sources & evidence

ORD record
ord-fa69fffea1fd4cf48407aead89b4caa8
Source dataset
uspto-grants-2013_08
Patent number
US08501765B2

Reaction notes

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