Phenylacetyl chloride → HCID 21939585, compound

HRID 1242791Notes

Reaction equation

HRID 1242791 reaction equation
[C:1]([N:8]1[CH2:13][CH2:12][NH:11][CH2:10][CH2:9]1)([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2].C([N:17](C(C)C)CC)(C)C.[C:23]1([CH2:29][C:30](Cl)=[O:31])[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1>ClCCl>[C:1]([N:8]1[CH2:9][CH2:10][N:11]([NH:17][C:30](=[O:31])[CH2:29][C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)[CH2:12][CH2:13]1)([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2]

Participants

5

Reactant 3

HCID 7679Phenylacetyl chlorideHCID 81531DiisopropylethylamineHCID 143452tert-Butyl piperazine-1-carboxylate

Product 1

HCID 21939585HCID 21939585, compoundYield 100%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

BOC-Piperazine (1.06 g) was combined with dichloromethane (20.0 mL) and diisopropylethylamine (1.49 mL). Phenylacetylchloride (0.90 mL) was added dropwise and the reaction was allowed to stir at room temperature for 24 hours. The reaction was then washed with HCl (1N in water, 3×5 mL), saturated aqueous sodium bicarbonate (3×5 mL) and brine (5 mL). The organic layer was dried over anhydrous magnesium sulfate, filtered and concentrated giving 1-BOC-4-phenylacetamidopiperazine (1.73 g). Yield=100% Step 2: The BOC group was removed from 1-BOC-4-phenylacetamidopiperazine according to example 137 giving phenylacetamidopiperazine hydrochloride. Yield=93%. Step 3: Phenylacetamidopiperazine hydrochloride was reacted with 8-ethyl-6-chloropurine (Example 140) according to Example 87. Yield=27%, ES-MS: (M+H)+ 351.

Workup

  1. washThe reaction was then washed with HCl (1N in water, 3×5 mL), saturated aqueous sodium bicarbonate (3×5 mL) and brine (5 mL)
  2. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-cb6d587a2c7d4577a0f3b334d7929e8c
Source dataset
uspto-grants-2006_10
Patent number
US07115741B2

Reaction notes

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