Benzyl Bromide → HCID 10991307, compound

HRID 373399Notes

Reaction equation

HRID 373399 reaction equation
[H-].[Na+].[C:3]1([C@H:9]([N:11]2[C@H:15]3[CH2:16][O:17][C:18](=[O:19])[C@H:14]3[NH:13][C:12]2=[O:20])[CH3:10])[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[CH2:21](Br)[C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1>C(COC)OC>[C:3]1([C@H:9]([N:11]2[C@H:15]3[CH2:16][O:17][C:18](=[O:19])[C@H:14]3[N:13]([CH2:21][C:22]3[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=3)[C:12]2=[O:20])[CH3:10])[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1

Participants

5

Reactant 3

HCID 7498Benzyl BromideHCID 24758Sodium hydrideHCID 11075738HCID 11075738, compound

Product 1

HCID 10991307HCID 10991307, compound

Reagents, catalysts & solvents 1

HCID 80711,2-DimethoxyethaneSolvent

Procedure

48 ml of dimethoxyethane and 0.39 g (16.2 mmol) of sodium hydride were placed in a 100-ml three-neck flask equipped with a magnetic stirrer under argon and with complete exclusion of moisture. Then 3.24 g (13.2 mmol) of (3aS, 6aR)-1-[(R)-(1-phenylethyl)]-dihydro-1H-furo[3,4-d]-imidazol-2,4(3H, 3aH)-dione was added. After a stirring time of 10 min., 2.76 g (16.2 mmol) of benzyl bromide was added and the suspension was stirred for 30 min. Then the reaction mixture was evaporated. The residue was dissolved with 25 ml of dichloromethane and 25 ml of water. The phases were separated and the aqueous phase was washed three times, each time with 15 ml of water. The organic phases were combined, dried with 5 g of magnesium sulfate and evaporated. (3aS, 6aR)-1-[R)-(1-phenylethyl)-3-benzyl-dihydro-1H-furo-[3,4-d]-imidazol-2,4(3H, 3aH)-dione was obtained as a beige product in a yield of 3.56 g (80.5 percent). Concerning the product: Melting point: 163°-164.5° C.

Workup

  1. customequipped with a magnetic stirrer under argon and with complete exclusion of moisture
  2. customThen the reaction mixture was evaporated
  3. dissolutionThe residue was dissolved with 25 ml of dichloromethane and 25 ml of water
  4. customThe phases were separated
  5. washthe aqueous phase was washed three times
  6. dry with materialdried with 5 g of magnesium sulfate
  7. customevaporated

Sources & evidence

ORD record
ord-3308a79f0f1f4d2a8d2a1111438ceb3b
Source dataset
uspto-grants-1992_11
Patent number
US05162540

Reaction notes

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