Lithium hydroxide, monohydrate → HCID 22264352, compound

HRID 1263556Notes

Reaction equation

HRID 1263556 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:29]=[C:30]([O:34][CH3:35])[C:31]=1[O:32][CH3:33])[O:6][CH2:7][C:8]([N:10]1[CH2:15][CH2:14][N:13]([CH2:16][C:17]2[CH:22]=[CH:21][C:20]([F:23])=[CH:19][CH:18]=2)[CH2:12][CH:11]1[CH2:24][C:25]([O:27]C)=[O:26])=[O:9].CO.O.O.[OH-].[Li+]>C(OCC)(=O)C>[CH3:35][O:34][C:30]1[CH:29]=[C:5]([CH:4]=[C:3]([O:2][CH3:1])[C:31]=1[O:32][CH3:33])[O:6][CH2:7][C:8]([N:10]1[CH2:15][CH2:14][N:13]([CH2:16][C:17]2[CH:22]=[CH:21][C:20]([F:23])=[CH:19][CH:18]=2)[CH2:12][CH:11]1[CH2:24][C:25]([OH:27])=[O:26])=[O:9]

Participants

5

Reactant 3

HCID 168937Lithium hydroxide, monohydrateHCID 22242641Methanol--water (1/1)HCID 22264445HCID 22264445, compound

Product 1

HCID 22264352HCID 22264352, compoundYield 30%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 1-((3,4,5-trimethoxyphenoxy)methyl)carbonyl-2-(methoxycarbonyl)methyl-4-(4-fluorobenzyl)piperazine (0.20 g, 0.42 mmol) in a methanol/water solution (20 mL, 3:1) was added lithium hydroxide, monohydrate (0.40 mL, 9.5 mmol). The resultant mixture was stirred at ambient temperature for 30 min. At that time HPLC analysis showed complete conversion had occurred. The mixture was poured into ethyl acetate and washed sequentially with an aqueous acetic acid/water solution (pH<4), water, and brine. The organic layer was separated, dried over MgSO4, filtered and concentrated in vacuo to afford 0.060 g of 1-((3,4,5-trimethoxyphenoxy)methyl)carbonyl-2-(carboxy)methyl-4-(4-fluorobenzyl)piperazine as a white solid; NMR (CDCl3) 7.4 (m, 2), 7.1 (m, 2), 6.2 (m, 2), 5.1 (m, 1), 4.7 (m, 3), 4.0 (m, 2), 3.8 (d, 9), 3.3-3.1 (m, 4), 2.6 (m, 2), 2.4 (m, 2) ppm, MS (ESI) 476.

Workup

  1. washwashed sequentially with an aqueous acetic acid/water solution (pH<4), water, and brine
  2. customThe organic layer was separated
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-2c272563b7d248c99b264da0eef71020
Source dataset
uspto-grants-2003_04
Patent number
US06541476B1

Reaction notes

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